9-(-12)+(-13)-4=

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Solution for 9-(-12)+(-13)-4= equation:


Simplifying
9 + -1(-12) + (-13) + -4 = 0

Multiply -1 * -12
9 + 12 + (-13) + -4 = 0
9 + 12 + -13 + -4 = 0

Combine like terms: 9 + 12 = 21
21 + -13 + -4 = 0

Combine like terms: 21 + -13 = 8
8 + -4 = 0

Combine like terms: 8 + -4 = 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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