-3a+18=39

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Solution for -3a+18=39 equation: 


Simplifying
-3a + 18 = 39

Reorder the terms:
18 + -3a = 39

Solving
18 + -3a = 39

Solving for variable 'a'.

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

Add '-18' to each side of the equation.
18 + -18 + -3a = 39 + -18

Combine like terms: 18 + -18 = 0
0 + -3a = 39 + -18
-3a = 39 + -18

Combine like terms: 39 + -18 = 21
-3a = 21

Divide each side by '-3'.
a = -7

Simplifying
a = -7

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