6(7+2a)=78

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Solution for 6(7+2a)=78 equation: 


Simplifying
6(7 + 2a) = 78
(7 * 6 + 2a * 6) = 78
(42 + 12a) = 78

Solving
42 + 12a = 78

Solving for variable 'a'.

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

Add '-42' to each side of the equation.
42 + -42 + 12a = 78 + -42

Combine like terms: 42 + -42 = 0
0 + 12a = 78 + -42
12a = 78 + -42

Combine like terms: 78 + -42 = 36
12a = 36

Divide each side by '12'.
a = 3

Simplifying
a = 3

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