-(3y+3)-(-2y-7)=0

Solution for -(3y+3)-(-2y-7)=0 equation:

Simplifying
-1(3y + 3) + -1(-2y + -7) = 0

Reorder the terms:
-1(3 + 3y) + -1(-2y + -7) = 0
(3 * -1 + 3y * -1) + -1(-2y + -7) = 0
(-3 + -3y) + -1(-2y + -7) = 0

Reorder the terms:
-3 + -3y + -1(-7 + -2y) = 0
-3 + -3y + (-7 * -1 + -2y * -1) = 0
-3 + -3y + (7 + 2y) = 0

Reorder the terms:
-3 + 7 + -3y + 2y = 0

Combine like terms: -3 + 7 = 4
4 + -3y + 2y = 0

Combine like terms: -3y + 2y = -1y
4 + -1y = 0

Solving
4 + -1y = 0

Solving for variable 'y'.

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

Add '-4' to each side of the equation.
4 + -4 + -1y = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -1y = 0 + -4
-1y = 0 + -4

Combine like terms: 0 + -4 = -4
-1y = -4

Divide each side by '-1'.
y = 4

Simplifying
y = 4