12-3(2-5)=21

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Solution for 12-3(2-5)=21 equation: 


Simplifying
12 + -3(2 + -5) = 21

Combine like terms: 2 + -5 = -3
12 + -3(-3) = 21

Multiply -3 * -3
12 + 9 = 21

Combine like terms: 12 + 9 = 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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