-5(-3)-(-6)=21

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Solution for -5(-3)-(-6)=21 equation: 


Simplifying
-5(-3) + -1(-6) = 21

Multiply -5 * -3
15 + -1(-6) = 21

Multiply -1 * -6
15 + 6 = 21

Combine like terms: 15 + 6 = 21
21 = 21

Add '-21' to each side of the equation.
21 + -21 = 21 + -21

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

Combine like terms: 21 + -21 = 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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