[9]+[3]=12

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Solution for [9]+[3]=12 equation: 


Simplifying
[9] + [3] = 12
9 + [3] = 12
9 + 3 = 12

Combine like terms: 9 + 3 = 12
12 = 12

Add '-12' to each side of the equation.
12 + -12 = 12 + -12

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

Combine like terms: 12 + -12 = 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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