15+3a=54

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Solution for 15+3a=54 equation: 


Simplifying
15 + 3a = 54

Solving
15 + 3a = 54

Solving for variable 'a'.

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

Add '-15' to each side of the equation.
15 + -15 + 3a = 54 + -15

Combine like terms: 15 + -15 = 0
0 + 3a = 54 + -15
3a = 54 + -15

Combine like terms: 54 + -15 = 39
3a = 39

Divide each side by '3'.
a = 13

Simplifying
a = 13

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