15-(-20)=35

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Solution for 15-(-20)=35 equation: 


Simplifying
15 + -1(-20) = 35

Multiply -1 * -20
15 + 20 = 35

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

Add '-35' to each side of the equation.
35 + -35 = 35 + -35

Combine like terms: 35 + -35 = 0
0 = 35 + -35

Combine like terms: 35 + -35 = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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