7y-3y=4y-15

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Solution for 7y-3y=4y-15 equation: 


Simplifying
7y + -3y = 4y + -15

Combine like terms: 7y + -3y = 4y
4y = 4y + -15

Reorder the terms:
4y = -15 + 4y

Add '-4y' to each side of the equation.
4y + -4y = -15 + 4y + -4y

Combine like terms: 4y + -4y = 0
0 = -15 + 4y + -4y

Combine like terms: 4y + -4y = 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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