3(y-1)-3(2y)=4

Solution for 3(y-1)-3(2y)=4 equation:

Simplifying
3(y + -1) + -3(2y) = 4

Reorder the terms:
3(-1 + y) + -3(2y) = 4
(-1 * 3 + y * 3) + -3(2y) = 4
(-3 + 3y) + -3(2y) = 4

Remove parenthesis around (2y)
-3 + 3y + -3 * 2y = 4

Multiply -3 * 2
-3 + 3y + -6y = 4

Combine like terms: 3y + -6y = -3y
-3 + -3y = 4

Solving
-3 + -3y = 4

Solving for variable 'y'.

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

Add '3' to each side of the equation.
-3 + 3 + -3y = 4 + 3

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

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

Divide each side by '-3'.
y = -2.333333333

Simplifying
y = -2.333333333