-3-9y-3y=-15

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Solution for -3-9y-3y=-15 equation: 


Simplifying
-3 + -9y + -3y = -15

Combine like terms: -9y + -3y = -12y
-3 + -12y = -15

Solving
-3 + -12y = -15

Solving for variable 'y'.

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

Add '3' to each side of the equation.
-3 + 3 + -12y = -15 + 3

Combine like terms: -3 + 3 = 0
0 + -12y = -15 + 3
-12y = -15 + 3

Combine like terms: -15 + 3 = -12
-12y = -12

Divide each side by '-12'.
y = 1

Simplifying
y = 1

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