3a+12=18

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Solution for 3a+12=18 equation: 


Simplifying
3a + 12 = 18

Reorder the terms:
12 + 3a = 18

Solving
12 + 3a = 18

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 = 18 + -12

Combine like terms: 12 + -12 = 0
0 + 3a = 18 + -12
3a = 18 + -12

Combine like terms: 18 + -12 = 6
3a = 6

Divide each side by '3'.
a = 2

Simplifying
a = 2

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