9-[6-(-7)]=

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Solution for 9-[6-(-7)]= equation: 


Simplifying
9 + -1[6 + -1(-7)] = 0

Multiply -1 * -7
9 + -1[6 + 7] = 0

Combine like terms: 6 + 7 = 13
9 + -1[13] = 0

Multiply -1 * 13
9 + -13 = 0

Combine like terms: 9 + -13 = -4
-4 = 0

Solving
-4 = 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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