Question

What is the value of the y variable in the solution to the following system of equations?
3x - 6y = 12
-2x + 3y = 6

-14

24

14

-24
so confused. help!

Answer 1

please use an easy method.

Answer 2

@svt2000

Answer 3

im so sorry, i tried to to this,but couldnt.. let me give it another shot.

Answer 4

ok thank you

Answer 5

Multiply the bottom equation by 2

Answer 6

What did you get?

Answer 7

4x+6y=12
@ Mertsj

Answer 8

Add that to the first equation.

Answer 9

7x=24

Answer 10

When you multiply the second equation by 2, you should get: -4x +6y = 12

Answer 11

oh yeah I messed up on the - 2 so i'll get
-x=24>>>>>x=-24

Answer 12

yes. Now choose any equation that contains a y. Replace x with -24 and solve for y

Answer 13

so......y=14

Answer 14

Which equation did you use?

Answer 15

3x - 6y = 12
3(-24)-6y=12
-72-6y=12
+72
-6y=84
84/-6
y=14

Answer 16

When you divide + 84 by -6, what do you get?

Answer 17

14

Answer 18

Hmmm....I was always taught that positive divided by negative is negative.

Answer 19

your right my bad

Answer 20

-14

Answer 21

That's what I got.

Answer 22

thank you man your a life saver!

Answer 23

your right my bad....that should be you're...short for you are
and you are welcome
(no extra charge for the English lesson)

Answer 24

lol thank you anyway

Answer 25

yw