-18y-4y+8y+12y+7y=-15

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Solution for -18y-4y+8y+12y+7y=-15 equation: 


Simplifying
-18y + -4y + 8y + 12y + 7y = -15

Combine like terms: -18y + -4y = -22y
-22y + 8y + 12y + 7y = -15

Combine like terms: -22y + 8y = -14y
-14y + 12y + 7y = -15

Combine like terms: -14y + 12y = -2y
-2y + 7y = -15

Combine like terms: -2y + 7y = 5y
5y = -15

Solving
5y = -15

Solving for variable 'y'.

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

Divide each side by '5'.
y = -3

Simplifying
y = -3

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