-7-10-(-21)+(-21)=

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Solution for -7-10-(-21)+(-21)= equation: 


Simplifying
-7 + -10 + -1(-21) + (-21) = 0

Multiply -1 * -21
-7 + -10 + 21 + (-21) = 0
-7 + -10 + 21 + -21 = 0

Combine like terms: -7 + -10 = -17
-17 + 21 + -21 = 0

Combine like terms: -17 + 21 = 4
4 + -21 = 0

Combine like terms: 4 + -21 = -17
-17 = 0

Solving
-17 = 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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