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

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


Simplifying
-1 + -1 + -1(-2) + 7 = 0

Multiply -1 * -2
-1 + -1 + 2 + 7 = 0

Combine like terms: -1 + -1 = -2
-2 + 2 + 7 = 0

Combine like terms: -2 + 2 = 0
0 + 7 = 0
7 = 0

Solving
7 = 0

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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