3*-6-9=y

Solution for 3*-6-9=y equation:

Simplifying
3 * -6 + -9 = y

Multiply 3 * -6
-18 + -9 = y

Combine like terms: -18 + -9 = -27
-27 = y

Solving
-27 = y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
-27 + -1y = y + -1y

Combine like terms: y + -1y = 0
-27 + -1y = 0

Add '27' to each side of the equation.
-27 + 27 + -1y = 0 + 27

Combine like terms: -27 + 27 = 0
0 + -1y = 0 + 27
-1y = 0 + 27

Combine like terms: 0 + 27 = 27
-1y = 27

Divide each side by '-1'.
y = -27

Simplifying
y = -27