×+7y=-37
4×-3y=7
solve by substitution

X+7y=-37
4x-3y=7

Subtract 7y on both sides for the first problem
x=-37-7y
4x-3y=7

Substitute the x in the second problem for -37-7y
4(-37-7y)-3y=7

Multiply the 4 with -37 and -7y
-148-28y-3y=7

subtract the -28 with -3y
-148-31y=7

add 148 on both sides
-31y=155

divide the -31 on both sides to solve for y
y=-5

To solve for x substitute the y for -5 in the first problem
x=-37-7(-5)

Multiply the -7 with -5
x=-37+35

Add the -37 with the 35 to solve for x
x=-2

Your answers
y=-5
x=-2
(-2,-5)

It was a rat's nest. Not a literal one, but that is what her hair seemed to resemble every morning when she got up. It was going to take at least an hour to get it under control and she was sick and tired of it. She peered into the mirror and wondered if it was worth it. It wasn't. She opened the drawer and picked up the hair clippers.