-3y-15=9y+9

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


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

Reorder the terms:
-15 + -3y = 9y + 9

Reorder the terms:
-15 + -3y = 9 + 9y

Solving
-15 + -3y = 9 + 9y

Solving for variable 'y'.

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

Add '-9y' to each side of the equation.
-15 + -3y + -9y = 9 + 9y + -9y

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

Combine like terms: 9y + -9y = 0
-15 + -12y = 9 + 0
-15 + -12y = 9

Add '15' to each side of the equation.
-15 + 15 + -12y = 9 + 15

Combine like terms: -15 + 15 = 0
0 + -12y = 9 + 15
-12y = 9 + 15

Combine like terms: 9 + 15 = 24
-12y = 24

Divide each side by '-12'.
y = -2

Simplifying
y = -2

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