Question

Add.

Express your answer in simplest terms.

2/3 + 2/7

Answer 1

You have any idea how to do it?

Answer 2

find the LCD

Answer 3

Yes. What is the LCD?

Answer 4

Well it doesn't have to be the lowest common denominator, just a common denominator, although the LCD is the most convenient.

Answer 5

Wanna know the easiest way of finding a common denominator?

Answer 6

yes plz

Answer 7

K. \[\large \sf For~\frac{a}{b}+\frac{c}{d}\\\large \sf (\frac{a}{b} \times \frac{d}{d})+(\frac{c}{d} \times \frac{b}{b})\] Keep in mind that this will just get you a common denominator and it may not be the lowest one, but it is a good method to keep in hand

Answer 8

Just to be clear: the LCD here is the product bd.

In the actual addtiion problem you're working on, \[\frac{ 2 }{ 3 }+\frac{ 3 }{ 7, }\]

Answer 9

2/7*

Answer 10

the two diferent denominators are 3 and 7. Multiply those together to get y our LCD.
What is it?
Yes, 2/7, thank you.

Answer 11

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

Answer 12

@dulcereon, please multiply the two denominators together to obtain the LCD.

Answer 13

\[\large \sf For~\frac{a}{b}+\frac{c}{d}\] \[\large \sf \huge ( \large \frac{a}{b} \times \frac{d}{d} \huge ) \large + \huge ( \large \frac{c}{d} \times \frac{b}{b} \huge )\]

Answer 14

Made the parentheses less ugly

Answer 15

@dulceceron, please multiply the two denominators together to obtain the LCD. Where have you been?

Answer 16

the LCD is 21 and do i x or add the numerators

Answer 17

@LegendarySadist

Answer 18

\[\large \sf For~\frac{a}{b}+\frac{c}{d}\] \[\large \sf \huge ( \large \frac{a}{b} \times \frac{d}{d} \huge ) \large + \huge ( \large \frac{c}{d} \times \frac{b}{b} \huge )\] for a=2, b=3, c=2, d=7

Answer 19

i dont get the letters

Answer 20

You definitely MULTIPLY the 2 denominators together.
By what number do you multiply the 3 in the first denominator?

Answer 21

They're just representations of the fractions so you can use the same process on other fractions.

Answer 22

The Sadist is just taking a more theoreticl approach, but is entirely correct.

Answer 23

You definitely MULTIPLY the 2 denominators together.
By what number do you multiply the 3 in the first denominator?

Answer 24

do i multiply the numerators

Answer 25

Yes. Both The Sadist and I have asked you to do that.

Answer 26

The left fraction is 2/3. I'm asking you: By what number do you multiply that 3, the denominator of the left fraction?

Answer 27

4/21

Answer 28

The 21 is fine; that's your LCD. Where did that 4 come from? We were not yet ready to combine the two fractions.

The left fraction is 2/3. By which number do we multiply that 3 to get 27?

Answer 29

si

Answer 30

si? as in Spanish, si?

Please answer with a number.

Answer 31

yes and what do you mean answer with a number

Answer 32

You have the fraction 2/3. You must find the LCD to add 2/3 to 2/7.

You correctly found that the LCD is 21. How did you find that 21?

Answer 33

3 ( ? ) = 21

Answer 34

can u plz tell me the answer cuz i am in a hurry

Answer 35

3 (7) = 21.

the first fraction is 2/3.

I'm asking you to multiply BOTH the numerator (2) and the denominator (3) by 7.

7(2) =

7(3) =

Answer 36

6/7

Answer 37

but 7*2 = 14. where did 6/7 come from?

7*3= what?

Answer 38

21

Answer 39

If this multiplication is hard for you, use a calculator.

But you'll need to know how to multiply 2 by 7 and 3 by 7.

Answer 40

just tell me the answer

Answer 41

Sorry, I cannot and will not do that. My purpose, and that of OpenStudy, is to help YOU learn how to do these problems YOURSELF.

Answer 42

2 times 7 is 2*7 or 2(7) and is 14.

3 times 7 is 3*7, and is .... ??

Answer 43

i found the answer

Answer 44

Good for you, but I wish so much you'd take the time to learn how to do this multiplication y ourself.

Answer 45

Good luck. Come back when you're feeling more ready to learn and practice.