-2(-1)-9(-1)=7

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Solution for -2(-1)-9(-1)=7 equation: 


Simplifying
-2(-1) + -9(-1) = 7

Multiply -2 * -1
2 + -9(-1) = 7

Multiply -9 * -1
2 + 9 = 7

Combine like terms: 2 + 9 = 11
11 = 7

Solving
11 = 7

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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