3x=21+12

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Solution for 3x=21+12 equation: 


Simplifying
3x = 21 + 12

Combine like terms: 21 + 12 = 33
3x = 33

Solving
3x = 33

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Divide each side by '3'.
x = 11

Simplifying
x = 11

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