3(5+4a)=99

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Solution for 3(5+4a)=99 equation: 


Simplifying
3(5 + 4a) = 99
(5 * 3 + 4a * 3) = 99
(15 + 12a) = 99

Solving
15 + 12a = 99

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 + 12a = 99 + -15

Combine like terms: 15 + -15 = 0
0 + 12a = 99 + -15
12a = 99 + -15

Combine like terms: 99 + -15 = 84
12a = 84

Divide each side by '12'.
a = 7

Simplifying
a = 7

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