77=15y-4y

Solution for 77=15y-4y equation:

Simplifying
77 = 15y + -4y

Combine like terms: 15y + -4y = 11y
77 = 11y

Solving
77 = 11y

Solving for variable 'y'.

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

Add '-11y' to each side of the equation.
77 + -11y = 11y + -11y

Combine like terms: 11y + -11y = 0
77 + -11y = 0

Add '-77' to each side of the equation.
77 + -77 + -11y = 0 + -77

Combine like terms: 77 + -77 = 0
0 + -11y = 0 + -77
-11y = 0 + -77

Combine like terms: 0 + -77 = -77
-11y = -77

Divide each side by '-11'.
y = 7

Simplifying
y = 7