2+7=(-1)

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Solution for 2+7=(-1) equation: 


Simplifying
2 + 7 = (-1)

Combine like terms: 2 + 7 = 9
9 = (-1)
9 = -1

Solving
9 = -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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