(y-3)-(y+6)=5y

Solution for (y-3)-(y+6)=5y equation:

Simplifying
(y + -3) + -1(y + 6) = 5y

Reorder the terms:
(-3 + y) + -1(y + 6) = 5y

Remove parenthesis around (-3 + y)
-3 + y + -1(y + 6) = 5y

Reorder the terms:
-3 + y + -1(6 + y) = 5y
-3 + y + (6 * -1 + y * -1) = 5y
-3 + y + (-6 + -1y) = 5y

Reorder the terms:
-3 + -6 + y + -1y = 5y

Combine like terms: -3 + -6 = -9
-9 + y + -1y = 5y

Combine like terms: y + -1y = 0
-9 + 0 = 5y
-9 = 5y

Solving
-9 = 5y

Solving for variable 'y'.

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

Add '-5y' to each side of the equation.
-9 + -5y = 5y + -5y

Combine like terms: 5y + -5y = 0
-9 + -5y = 0

Add '9' to each side of the equation.
-9 + 9 + -5y = 0 + 9

Combine like terms: -9 + 9 = 0
0 + -5y = 0 + 9
-5y = 0 + 9

Combine like terms: 0 + 9 = 9
-5y = 9

Divide each side by '-5'.
y = -1.8

Simplifying
y = -1.8