Question

HELP!!!
2x-y=-7
5x+y=-14
Find x and y??

Answer 1

If I did this correctly, not quite sure it is thisl
2x-y=-7
5x+y=-14
7x=-7
x=-1

Could anyone confirm this?

Answer 2

i got x is equal to positive one. ill double check on paper.

Answer 3

yeah that looks right but there is another step?

Answer 4

then put your answer for x into one of the original equations and solve for y

Answer 5

okay thanks

Answer 6

Well @xkaykayx92
7x=-7
/7 /7
x = -1

negative divided by a positive equals a negative, and vise versa.

Answer 7

Well @dread907 i got 7x=7 not negative 7 so yeah.

Answer 8

-2-y=-7
whats the next step?

Answer 9

thats after i did 2(-1)-y=-7

Answer 10

How did you manage that? Unless you did it opposite of me because I went -14 - (-)7 = 14 + 7 = -7
Did you do
-7 - (-14) = -7 + 14 = 7 ?

Answer 11

Combine like terms. so;
y = -5

Answer 12

-2 and -7 being the like terms.

Answer 13

thanks! You guys are so amazing :) @dread907 @xkaykayx92

Answer 14

After that plug x and y into the other equation.

Answer 15

okay i have another problem ahah

Answer 16

whats the problem @katie__michelle

Answer 17

4x+y=6
-2x+4y=6

Answer 18

i got x=1 and y=2

@dread907 do you agree with that?

Answer 19

Yes, but it would help Katie if you showed all of your work instead of simply giving an answer.

Answer 20

@dread907 thanks haha

Answer 21

okay

take 4x+y=6 and make it y=-4x+6

then plug that equation into the other one to solve for x

-2x+4(-4x+6)=6

and you get -2x-16x+24=6
then solve for x
-18x=-18
x=1

then plug x into an orginal equation to solve for y

4x+y=6
4(1)+y=6
y=2

Answer 22

Good job on the explanation! Don't forget to close your question if your done Katie.

Answer 23

okay thanks guys