Question

May i please get some help! I dont understand and have been struggling with this for a week and about to get kicked out for not doing work... Please help! :'(

Answer 1

Simplify the following expression: (x - 8y) - (2x - 4y). If the final answer is written in the form Ax + By, what is the value of B?

Answer 2

can you combine like terms?

Answer 3

A little... :'(

Answer 4

ok, show me what you got :)

Answer 5

3x-12y??

Answer 6

really good attempt, you only forgot 1 thing.

Answer 7

What? I have to know...

Answer 8

\[ (x - 8y) \color\red{-} (2x - 4y)= (x - 8y) [\color\red{-1*} (2x - 4y)]\]

Answer 9

You forgot to distribute the minus sign

Answer 10

try thinking of it as I wrote it above.

Answer 11

Okay...

Answer 12

give it another try for me. here is a reference if you are confused https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-variables-expressions/cc-7th-manipulating-expressions/v/combining-like-terms-and-the-distributive-property

Answer 13

Okay...

Answer 14

Okay... Idk... :'(

Answer 15

ok, so, can you just distribute the minus sign for me here
\[-(2x-4y)\]?

Answer 16

watch the video if you are confused, then come back and tag me

Answer 17

For some reason its not coming up @FibonacciChick666

Answer 18

hmm... try google ing
"khanacademy: simplifying parentheses" it is the second link

Answer 19

Okay... Wait i brb...

Answer 20

Sorry i dont get it... Could you just help me step by step? PLease!

Answer 21

@FibonacciChick666

Answer 22

@Ashy98

Answer 23

@juana02

Answer 24

@flight98

Answer 25

@piercetheveil47

Answer 26

@pooja195

Answer 27

@paki

Answer 28

x-8y-2x+4y
= -x-4y
A=-1,B=-4

Answer 29

Is that the answer?

Answer 30

@Directrix

Answer 31

did you watch that video @FibonacciChick666 put ?

Answer 32

No?

Answer 33

https://www.khanacademy.org/math/cc-seventh-grade-math/cc-7th-variables-expressions/cc-7th-manipulating-expressions/v/combining-like-terms-and-the-distributive-property

Answer 34

Its okay i got it...
May you guys help with another?

Answer 35

No? .

Answer 36

@ckellar2

Answer 37

Okay?.... I mean from everyone else besides you @FibonacciChick666

Answer 38

whts next?

Answer 39

What ya mean??

Answer 40

nvm

Answer 41

Could you show us how you solved it?

Answer 42

Umm... I didnt get it... So I just skipped it... Its taking me too long...

Answer 43

That's not how you're going to learn :(

Answer 44

i was goiing to go back t it later...

Answer 45

So you have ` (x - 8y) - (2x - 4y)`

what is -1 \(\cdot\) (2x) = ?

Answer 46

It combined i guess?

Answer 47

what is a number multiplied by -1 ......

Answer 48

The same when it was multiplied??

Answer 49

No. When you multiply a number, x by -1, the number becomes negative. -x.

Answer 50

So according to this understanding, if you multiply a number, 2x, by -1, what does it become? \((-1)(2x) = ~? \)

Answer 51

Oh... Okay.

Answer 52

-2x??

Answer 53

Good job.

Answer 54

YAY!! :)

Answer 55

Now when you multiply 2 negatives together, you get a + number. i.e. \((-1)(-1)= +1\).

So what is \(-1)(-4y)=~?\)

Answer 56

5?

Answer 57

How did you get 5.

Answer 58

Since it turns into i positive i figured it would add instead of subtract... Am i right?

Answer 59

\[(-1)(-4y) \ne 5\] try again.

Answer 60

No, parenthesis always suggest multiplication.

Answer 61

3?

Answer 62

look at the example I gave you with the 2 negative 1's.

You are not actively paying attention right now and it is reflecting through your understanding. It seems more as if you are guessing rather than even bothering to read my posts.

Answer 63

I am reading your post!! Sorry im a little slow...

Answer 64

:'(

Answer 65

ok.. what is 4 x 1?

Answer 66

?

Answer 67

4...

Answer 68

alright good... now what (-4)(-y)

negative x negative = positive

Answer 69

4y

Answer 70

yes ^_^

Answer 71

Okay... YAY!

Answer 72

so back to this
(x - 8y) - (2x - 4y)

(x-8y-2x+4y)
rewrite it... combing all x's and y's and then do the computation

Answer 73

combine all the x's first
then y's
and then simplify

Answer 74

Okay... 3x-12y....

Answer 75

ummm... we are just adding and subtracting

Answer 76

(x-8y-2x+4y)
ok take this and rearrange it... have all x's by itself and all y's by itself

Answer 77

x-2x-8y+4y???

Answer 78

\(\checkmark\)

Answer 79

ok now solve x and y

Answer 80

as in what is x-2x
what is -8y+4y

Answer 81

Umm... I am guessing 1x 14y?

Answer 82

@UsukiDoll ?? Ya there? Sorry i took long...

Answer 83

ya and it's wrong

Answer 84

Oh... :'( I will never get it...

Answer 85

think of it as ... for x... I am selling a brownie for $2 but you only have $1, so how much do you owe me?

Answer 86

$1 back...

Answer 87

yeah you owe me $1 so , you're -1 in the red.. so that's -x

Answer 88

Okay...

Answer 89

again with this one
-8y+4y
I'm selling a plate lunch for $8, but you only have $4 ... you owe me...

Answer 90

$4...

Answer 91

yes

Answer 92

-x-4y

Answer 93

OKay... How about this one?

Answer 94

that's the answer

Answer 95

OH!! =o

Answer 96

Thank you! :)