Question

What is the simplified form of x+9/4 + x+5/4

Answer 1

I understand 0% of this lesson... Help?

Answer 2

Sorry, typo.

x+9/x+1 + x-2/5

Answer 3

oh ok thats better

Answer 4

Can you help me?

Answer 5

Here are the choices:

Answer 6

Look at the two given fractions which are being added together. What is the LCD of this set of 2 fractions? LCD = lowest common denominator.

Answer 7

1?

Answer 8

what does LCD mean to you? Hint: It's not 1.

Answer 9

Lowest common denominator.

Answer 10

Yes, and what does lowest common denominator mean in this context?

Answer 11

Denominator is the lower part of the fraction.

Answer 12

yes, and what does lowest common denominator mean? How do you find the LCD if you are given 2 fractions with different denoms. and are asked to add the fractions together?

Answer 13

I'm not sure off the top of my head what LCD mean in this context.

Answer 14

Better look up Lowest Common Denominator.

Or, given

2/3 + 7/8, find the lcd and then add these fractions together.

Answer 15

LCD means the least common multiple of two numbers.
So, in this question, 5?

Answer 16

Sorry, no. How did you get 5? Try again. what is the LCD of the 2 fractions, \[\frac{ 2 }{ 3 },\frac{ 7 }{ 8 }?\]

Answer 17

Sorry, I ment the question I asked. The LCD of that question is 24.

Answer 18

For mine it should be 5, right?

Answer 19

all right. add the 2 fractions together, please.

Answer 20

9/24, or 3/8?

Answer 21

3/8 being the simplified form?

Answer 22

are you telling me that the sum of 2/3 and 7/8 is 3/8?

Answer 23

Yes. Is that wrong?

Answer 24

definitely, I'm sorry to say.

How long has it been since you last studied "LCD"?

Answer 25

Since 7th grade. I'm in 10th now.

Answer 26

Thats the last time it was reviewed.

Answer 27

Seems as tho' you may need a review. Of course I can help with LCD's, but would prefer not to start from scratch. Since you have internet access, could you look up LCD?

Answer 28

To combine two fractions, you must either have the same denom. in each, or know how to obtain and use the LCD.

Answer 29

Okay

Answer 30

1/3 - (4/3) = ?

Answer 31

1?

Answer 32

No, try again.

Answer 33

:/

Answer 34

sign error

Answer 35

-1?

Answer 36

Better. Right.

find the lcd of 1/x and 2/y

Answer 37

3?

Answer 38

No.

If you're interested, here's the URL of a web site that discusses LCDs and how to find them:

https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/equivalent-fractions-pre-alg/v/finding-common-denominators

Answer 39

I'd like to help you, but much prefer you do some reading about LCDs and how to find and use them before we continue. Much material is available on the Internet.

Answer 40

I think I'll just find a different source of help. It might be googling the question since is 5 hours past my teachers hours.

Answer 41

any source of info that works for you would be a good starting point.

Answer 42

I have five other tests that need done before 10 tonight. My time, thats only two hours.

Answer 43

i find the Internet to be a wonderful source of info on the spot.

I very much sympathize, but also wonder how five tests could pile u p into one night.
How long ago were you asked to do these assignments?

Answer 44

the one I'm doing now needed sent in by the 24th of November.

Answer 45

In short, I'm behind.

Answer 46

Surely sounds like it. How did that happen? Do you schedule your study time?

Answer 47

No. Personal issues murdered my sleep schedule and I haven't been able to make it to the online meetings in the mornings.

Answer 48

Let's make the most of the scant time we have. are y ou or are you not going to do some quick research on LCDs on the 'Net?

Exactly what do you hope to get from me, other than answers?

Answer 49

I was hoping to get quick help with small explanations.

Answer 50

Seeing as i asked this over a half hour ago, I assume I'm on the wrong site for that kind of help.

Answer 51

Let's not be sarcastic. I object to having to explain concepts from scratch when you could reasonably be expected to have studied and practiced the basics.

Answer 52

Like I said, my schedule's been tight due to personal issues. I would study the stuff harder if I had the time for it.

Answer 53

You must have the same denominator in 2 fractions BEFORE you can add or subtract them. That's the principle.

The next quesion is HOW DO YOU FIND THE LCD? what do you remember?

I'm sorry about your having personal issues to deal with.

Answer 54

Add:\[\frac{ 3 }{ 7 }+\frac{ 2 }{ 5 }\]

Answer 55

to find the lcd, multiply the 7 and 5 together.

Answer 56

3/35 + 2/35?

Answer 57

21/35 + 14/35?

Answer 58

The first fraction is 3/7. If you mult. the denom. by 7, you must also mult the numerator by 7. Do that now, please.

Answer 59

Much b etter.

Answer 60

Then simplify?

Answer 61

Looking at the second fraction, whose den. is 5, mult both numerator and den. by 7 .

Answer 62

14/35?

Answer 63

\[\frac{ 3 }{ 7 }+\frac{ 2 }{ 5 }\]

Answer 64

Yes. You've mult both num. and den. of the 2nd fraction by 7. I made a mistake on the first fract. Mult both its num. and den. by 5, please.

Answer 65

10/25?

Answer 66

5 times 3 is 10?

Answer 67

Sorry, 15

Answer 68

15/35

Answer 69

better.

Now you have \[\frac{ 15 }{ 35 }+\frac{ 14 }{ 35 }\]

Answer 70

What is the LCD?

Answer 71

the LCD is 35.

Answer 72

Good. Now becasue you have the same den. in both fract., you can add the numerators to get the final answer (the sum)

Answer 73

Do so, please.

Answer 74

The simplified answer should be 29/35, right?

Answer 75

Can't be simplified. Yes, the final answer is 29/35. Congrats.

Answer 76

Now, find the LCD, use it and then add together \[\frac{ 3 }{ 7 }+\frac{ 2 }{ x }\]

Answer 77

the LCD is ... ?

Answer 78

7?

Answer 79

How did you get that? Have you used multiplication here?

Answer 80

7 * x = 7 since I don't know what x represents.

Answer 81

In this case you MUST mult two quantities together. Yes, the LCD is 7x.

Answer 82

Okay.

Answer 83

Given \[\frac{ 3 }{ 7 }+\frac{ 2 }{ x }\]

Answer 84

by what quantity must you mult. the num. and the den. of the first fract. ? why?

Answer 85

Is this cross multiplication?

Answer 86

No. focus on the 1st fract. Determine by what quant. you must mult. its num. and den.

Answer 87

By x, right?

Answer 88

Exactly. Do so, please.

Answer 89

3x / 7x?

Answer 90

very nice.
By what quant. must you mult num. and den. of the 2nd fract?

Answer 91

By x as well?

Answer 92

No. What's the LCD here?\[\frac{ 3 }{ 7 }+\frac{ 2 }{ x }\]

Answer 93

7x

Answer 94

So, 2x/7x?

Answer 95

Thus, mult the num and den of the 2nd fract by what quantity?

Answer 96

By x.

Answer 97

No, we've already used x to modify the 1st fract.
Now we are modifying the 2nd fract.