(3a)-13=20

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Solution for (3a)-13=20 equation: 


Simplifying
(3a) + -13 = 20

Reorder the terms:
-13 + (3a) = 20

Solving
-13 + (3a) = 20

Solving for variable 'a'.

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

Add '13' to each side of the equation.
-13 + 13 + (3a) = 20 + 13

Combine like terms: -13 + 13 = 0
0 + (3a) = 20 + 13
(3a) = 20 + 13

Combine like terms: 20 + 13 = 33
(3a) = 33

Divide each side by '3'.
a = 11

Simplifying
a = 11

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