20-15(-1)=

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Solution for 20-15(-1)= equation: 


Simplifying
20 + -15(-1) = 0

Multiply -15 * -1
20 + 15 = 0

Combine like terms: 20 + 15 = 35
35 = 0

Solving
35 = 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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