6(a+7)=91.2

Solution for 6(a+7)=91.2 equation:

Simplifying
6(a + 7) = 91.2

Reorder the terms:
6(7 + a) = 91.2
(7 * 6 + a * 6) = 91.2
(42 + 6a) = 91.2

Solving
42 + 6a = 91.2

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 + 6a = 91.2 + -42

Combine like terms: 42 + -42 = 0
0 + 6a = 91.2 + -42
6a = 91.2 + -42

Combine like terms: 91.2 + -42 = 49.2
6a = 49.2

Divide each side by '6'.
a = 8.2

Simplifying
a = 8.2