3(-1-y+1)=2(-1-y)-1

Solution for 3(-1-y+1)=2(-1-y)-1 equation:

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

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

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

Remove parenthesis around (-1y)
3 * -1y = 2(-1 + -1y) + -1

Multiply 3 * -1
-3y = 2(-1 + -1y) + -1
-3y = (-1 * 2 + -1y * 2) + -1
-3y = (-2 + -2y) + -1

Reorder the terms:
-3y = -2 + -1 + -2y

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

Solving
-3y = -3 + -2y

Solving for variable 'y'.

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

Add '2y' to each side of the equation.
-3y + 2y = -3 + -2y + 2y

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

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

Divide each side by '-1'.
y = 3

Simplifying
y = 3