Question

I need help with this question
9x - 2y =-54
7x + 47 = y

substitution method

Answer 1

substitute y=7x+47 in equation one first

Answer 2

The second line to be reduced to x+7=y, so the first line is...
9x-2(x+7)=-54
9x-2x-14=-54
add 14 to each side
9x-2x=40
7x=40

Answer 3

x=40/7

Answer 4

small mistake misspacgirl in line 2,-2(x+47):)

Answer 5

OHHHHHH... oopsss! Im sryyy! :O

Answer 6

x=-8 y=-9

Answer 7

one small mistake can make a huge difference!!!