83-77=39y-42y

Solution for 83-77=39y-42y equation:

Simplifying
83 + -77 = 39y + -42y

Combine like terms: 83 + -77 = 6
6 = 39y + -42y

Combine like terms: 39y + -42y = -3y
6 = -3y

Solving
6 = -3y

Solving for variable 'y'.

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

Add '3y' to each side of the equation.
6 + 3y = -3y + 3y

Combine like terms: -3y + 3y = 0
6 + 3y = 0

Add '-6' to each side of the equation.
6 + -6 + 3y = 0 + -6

Combine like terms: 6 + -6 = 0
0 + 3y = 0 + -6
3y = 0 + -6

Combine like terms: 0 + -6 = -6
3y = -6

Divide each side by '3'.
y = -2

Simplifying
y = -2