Question

3x – 2y = 8
x = 2
substitute the second part
x=2 into the first part
3(2)-2y=8
6-2y=8
-2y=2
y=-1

then plug -1 in for y and solve for x
3x-2(-1)=8
3x+2=8
3x=6
x=2
i need the check step to this please.

Answer 1

Yes looks right

Answer 2

you should get x=2 back when you plug in y=-1

Answer 3

3(2)-2(-1)=6+2=8

yes.

Answer 4

sweet that what i thought th check step was but theres more to others peoples

Answer 5

here is an example of how she wants it 3 + 2(9) = 21
3 + 18 = 21
21 = 21 Checks
9 = 3(3)
9 = 9 Check

Answer 6

and i am not sure how to get that with my problem