(6-18y)-(13+15y)=

Solution for (6-18y)-(13+15y)= equation:

Simplifying
(6 + -18y) + -1(13 + 15y) = 0

Remove parenthesis around (6 + -18y)
6 + -18y + -1(13 + 15y) = 0
6 + -18y + (13 * -1 + 15y * -1) = 0
6 + -18y + (-13 + -15y) = 0

Reorder the terms:
6 + -13 + -18y + -15y = 0

Combine like terms: 6 + -13 = -7
-7 + -18y + -15y = 0

Combine like terms: -18y + -15y = -33y
-7 + -33y = 0

Solving
-7 + -33y = 0

Solving for variable 'y'.

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

Add '7' to each side of the equation.
-7 + 7 + -33y = 0 + 7

Combine like terms: -7 + 7 = 0
0 + -33y = 0 + 7
-33y = 0 + 7

Combine like terms: 0 + 7 = 7
-33y = 7

Divide each side by '-33'.
y = -0.2121212121

Simplifying
y = -0.2121212121