-15(-6.6+0.4y)-4y=59

Solution for -15(-6.6+0.4y)-4y=59 equation:

Simplifying
-15(-6.6 + 0.4y) + -4y = 59
(-6.6 * -15 + 0.4y * -15) + -4y = 59
(99 + -6y) + -4y = 59

Combine like terms: -6y + -4y = -10y
99 + -10y = 59

Solving
99 + -10y = 59

Solving for variable 'y'.

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

Add '-99' to each side of the equation.
99 + -99 + -10y = 59 + -99

Combine like terms: 99 + -99 = 0
0 + -10y = 59 + -99
-10y = 59 + -99

Combine like terms: 59 + -99 = -40
-10y = -40

Divide each side by '-10'.
y = 4

Simplifying
y = 4