(6-15y)-(10+5y)=

Solution for (6-15y)-(10+5y)= equation:

Simplifying
(6 + -15y) + -1(10 + 5y) = 0

Remove parenthesis around (6 + -15y)
6 + -15y + -1(10 + 5y) = 0
6 + -15y + (10 * -1 + 5y * -1) = 0
6 + -15y + (-10 + -5y) = 0

Reorder the terms:
6 + -10 + -15y + -5y = 0

Combine like terms: 6 + -10 = -4
-4 + -15y + -5y = 0

Combine like terms: -15y + -5y = -20y
-4 + -20y = 0

Solving
-4 + -20y = 0

Solving for variable 'y'.

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

Add '4' to each side of the equation.
-4 + 4 + -20y = 0 + 4

Combine like terms: -4 + 4 = 0
0 + -20y = 0 + 4
-20y = 0 + 4

Combine like terms: 0 + 4 = 4
-20y = 4

Divide each side by '-20'.
y = -0.2

Simplifying
y = -0.2