21-3(4-1)=

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Solution for 21-3(4-1)= equation: 


Simplifying
21 + -3(4 + -1) = 0

Combine like terms: 4 + -1 = 3
21 + -3(3) = 0

Multiply -3 * 3
21 + -9 = 0

Combine like terms: 21 + -9 = 12
12 = 0

Solving
12 = 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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