3a-12=7

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Solution for 3a-12=7 equation: 


Simplifying
3a + -12 = 7

Reorder the terms:
-12 + 3a = 7

Solving
-12 + 3a = 7

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 = 7 + 12

Combine like terms: -12 + 12 = 0
0 + 3a = 7 + 12
3a = 7 + 12

Combine like terms: 7 + 12 = 19
3a = 19

Divide each side by '3'.
a = 6.333333333

Simplifying
a = 6.333333333

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