Can someone correctly answer these two question for me? you.

the steps for finding the solution to the system x = y - 8 and 3x - 2y = 7 are shown below. choose the first incorrect step.
a) 3(y - 8) - 2y = 7
b) 3y - 24 - 2y = 7
c) y- 24 = 7
d) y = 7 - 24

select two equations that can represent the system, 2x + 8y = 18 and y = - x + 6 in terms of the y- variable
1. 2x + 8(-x + 6) = 18
2. 2(- x + 6) + 8y = 18
3. -x + 6= -1/4x + 9/4
4. -x + 6 = -2x + 18