9(y+8)-7(y-10)=

Solution for 9(y+8)-7(y-10)= equation:

Simplifying
9(y + 8) + -7(y + -10) = 0

Reorder the terms:
9(8 + y) + -7(y + -10) = 0
(8 * 9 + y * 9) + -7(y + -10) = 0
(72 + 9y) + -7(y + -10) = 0

Reorder the terms:
72 + 9y + -7(-10 + y) = 0
72 + 9y + (-10 * -7 + y * -7) = 0
72 + 9y + (70 + -7y) = 0

Reorder the terms:
72 + 70 + 9y + -7y = 0

Combine like terms: 72 + 70 = 142
142 + 9y + -7y = 0

Combine like terms: 9y + -7y = 2y
142 + 2y = 0

Solving
142 + 2y = 0

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '-142' to each side of the equation.
142 + -142 + 2y = 0 + -142

Combine like terms: 142 + -142 = 0
0 + 2y = 0 + -142
2y = 0 + -142

Combine like terms: 0 + -142 = -142
2y = -142

Divide each side by '2'.
y = -71

Simplifying
y = -71