18-(-7)-12=

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Solution for 18-(-7)-12= equation: 


Simplifying
18 + -1(-7) + -12 = 0

Multiply -1 * -7
18 + 7 + -12 = 0

Combine like terms: 18 + 7 = 25
25 + -12 = 0

Combine like terms: 25 + -12 = 13
13 = 0

Solving
13 = 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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