Question

http://prntscr.com/iciu88

Answer 1

@563blackghost

Answer 2

@dude

Answer 3

@563blackghost

Answer 4

@Shadow

Answer 5

\(5x+2(x-7)=7\\
5x+2x-14=7\)
Combine like terms
\(7x-14=7\)

Answer 6

Add 14 to both sides
\(7x=21\)
Divide by 7 on both sides
\(x=3\)

Answer 7

Substitute back to solve for y
\(y=x-7\\
y=3-7\\
y=-4\)

Answer 8

\(\boxed{(3,-4)}\)