3(2*2-4)=9-3(2+1)

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Solution for 3(2*2-4)=9-3(2+1) equation: 


Simplifying
3(2 * 2 + -4) = 9 + -3(2 + 1)

Multiply 2 * 2
3(4 + -4) = 9 + -3(2 + 1)

Combine like terms: 4 + -4 = 0
3(0) = 9 + -3(2 + 1)

Multiply 3 * 0
0 = 9 + -3(2 + 1)

Anything times zero is zero.
0 = 9 + -3(2 + 1)

Combine like terms: 2 + 1 = 3
0 = 9 + -3(3)

Multiply -3 * 3
0 = 9 + -9

Combine like terms: 9 + -9 = 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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