Question

I need to use elimination to solve this problem idk what im doing wrong. my answer was (50,21) ...... not quite right i know..

{2x – 5y = -5
{-2x + 8y = -58

Answer 1

if you add the 2 equations the terms in x are eliminated and you get

3y = -63
so y = -63/3

Answer 2

so what is y?

Answer 3

y=21

Answer 4

no

dont forget the negative!!

Answer 5

oh y=-21

Answer 6

yes
now plug y = -21 into 2x - 5y = -5 to get value of x

Answer 7

remember that - time - = +

Answer 8

- times - = +

Answer 9

2x-5(-21)=-5

Answer 10

yea

Answer 11

2x+105=-5

Answer 12

2x=-110
right?

Answer 13

yes

Answer 14

now just divide by 2

Answer 15

x=55

Answer 16

No - NEGATIVE again!

Answer 17

(55,-21) is the answer then

Answer 18

oh dang it so (-55,-21)

Answer 19

right

Answer 20

thankyou

Answer 21

yw