-20-(-21)+(-19)-21=

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Solution for -20-(-21)+(-19)-21= equation: 


Simplifying
-20 + -1(-21) + (-19) + -21 = 0

Multiply -1 * -21
-20 + 21 + (-19) + -21 = 0
-20 + 21 + -19 + -21 = 0

Combine like terms: -20 + 21 = 1
1 + -19 + -21 = 0

Combine like terms: 1 + -19 = -18
-18 + -21 = 0

Combine like terms: -18 + -21 = -39
-39 = 0

Solving
-39 = 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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