21-3(0)=

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Solution for 21-3(0)= equation: 


Simplifying
21 + -3(0) = 0

Multiply -3 * 0
21 + 0 = 0

Anything times zero is zero.
21 + 0 = 0

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

Solving
21 = 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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