Question

solving equations by elimination!!

-9x + 3y = 27
10x - 3y = -30

Answer 1

solve it you can do it. I Trust you can do it.. It's Easy

Answer 2

@pinklove31419 you ca do it

Answer 3

Add them toghether together.
So -9x +10x = x
3y+(-3y)=0
so x =27-30

Answer 4

KNOW you now 'x' you can work out 'y'

Answer 5

-9x + 3y = 27
10x - 3y = -30
--------------add
x = - 3 (as you can see, the y's cancel each other out)

now substitute -3 in for x in either of the original equations....
-9(-3) + 3y = 27 or 10(-3) - 3y = -30
both of these equations, when worked out, will give you the same answer for y.