9y=9y-15

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Solution for 9y=9y-15 equation: 


Simplifying
9y = 9y + -15

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

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

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

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

Solving
0 = -15

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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