y-y+7=-1

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Solution for y-y+7=-1 equation: 


Simplifying
y + -1y + 7 = -1

Reorder the terms:
7 + y + -1y = -1

Combine like terms: y + -1y = 0
7 + 0 = -1
7 = -1

Solving
7 = -1

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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