12+3a=33

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Solution for 12+3a=33 equation: 


Simplifying
12 + 3a = 33

Solving
12 + 3a = 33

Solving for variable 'a'.

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

Add '-12' to each side of the equation.
12 + -12 + 3a = 33 + -12

Combine like terms: 12 + -12 = 0
0 + 3a = 33 + -12
3a = 33 + -12

Combine like terms: 33 + -12 = 21
3a = 21

Divide each side by '3'.
a = 7

Simplifying
a = 7

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