Question

Solve the equation for x.

7x = –2y

A.x=-7/2y

B.x=-2y/7

C.x=-14y

D.x=-9y

Answer 1

7x=-2y

what you are going to want to do here is isolate x, since that is what you are solving for

Answer 2

in englis plese

Answer 3

lol that was english x'D But alright.

So remember what you learned earlier? about reciprocals? you can apply the same concept here

Answer 4

i dont know resiprocals

Answer 5

so if you have 7x=-2y, how can you get rid of the 7?
Hint: it involves division, since division is the opposite of multiplication

Answer 6

7/7

Answer 7

if you were trying to say divide both sides by 7, then you are absolutely correct

Answer 8

no im am very confused

Answer 9

oh. okay. well, if you look at my drawing above, if you have a multiplication expression like 7x, you can eliminate the 7 from the x by dividing by 7

Answer 10

im bad at all these math word and how to do it

Answer 11

it's fine :) Do you understand the objective of the problem though?

We are trying to get x by itself :)

So in order to do that, we need to get rid of the 7. and we can do that by dividing both sides by 7

Answer 12

i think its eithr b or a

Answer 13

here is the equation

Answer 14

7/7 is 1 and 2/7/2 is 3.5

Answer 15

there is an extra 2 in there

Answer 16

you don't need to worry about the extra 2

Answer 17

it is quite simply -2/7

Answer 18

you do not need to simplify that any further, as that is one of the answer choices

Answer 19

the anserw i got was 0 when i 2/7

Answer 20

how did you get zero?

Answer 21

because we are doing 2/7 not7/2

Answer 22

*-2/7

Answer 23

that doesn't give you zero...once you divide -2 by 7, you can leave it at that.

Answer 24

you don't need to do anything further

Answer 25

oh wait
-3

Answer 26

i forgot the negitive

Answer 27

you are making it way more compicated

Answer 28

you shouldn't be getting -3... recall, you only have to divide -2 by 7 which gives you:

\(\Large -\frac{2}{7}\) which is not equal to -3

Answer 29

I am not complicating this... I am literally asking you to divide -2 by 7. Once you do this, you get your answer. Simple as that

Answer 30

well when i bring out the calc i get all these dicimals

Answer 31

you don't need to use a calculator here! If you look at the answer choices, none of them are simplified into decimals. It wants you to keep it in fraction form.

Answer 32

can you guys in the audiance help

Answer 33

ye u gotta pay $100 for that

Answer 34

why
i dont have$100

Answer 35

Let me break it down for you the easiest way I know ;-;

7x=-2y
/7 /7

x= \(\Large -\frac{2y}{7}\)

Answer 36

^ does that help you @kfgirl100 ? since the y is there, you don't really need to use a calculator. Just keep it in fractional form :)

Answer 37

btw i don't know how to divide and have trouble multiplying

Answer 38

that's fine! The only thing you need to know is that when you divide a number by the exact same number, it will always equal 1

Answer 39

i know

Answer 40

so if \(\Large\frac{7}{7}\) equals 1, then \(\Large\frac{7x}{7}\) is equal to x

Answer 41

the concepts here are pretty basic

Answer 42

\( ͡° ͜ʖ ͡°)/

Answer 43

so 1=x

Answer 44

no, once you divide 7x by 7, you get x...but that means you also divide the other side by 7

Since the other side is -2, you are dividing -2 by 7. However, you do not need to plug this into your calculator. You can see that -2y/7 is one of the answers

Answer 45

oh so the ansewr is b

Answer 46

correct.

Answer 47

you don't need to do any calculator work here, just got to know the rules \(\ddot\smile\)

Answer 48

yay thankyou i have alot of troble in math and spelling

Answer 49

that's okay! I'm here to help :)

Answer 50

kitty

Answer 51

how cute