9(a+8)=131.4

Solution for 9(a+8)=131.4 equation:

Simplifying
9(a + 8) = 131.4

Reorder the terms:
9(8 + a) = 131.4
(8 * 9 + a * 9) = 131.4
(72 + 9a) = 131.4

Solving
72 + 9a = 131.4

Solving for variable 'a'.

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

Add '-72' to each side of the equation.
72 + -72 + 9a = 131.4 + -72

Combine like terms: 72 + -72 = 0
0 + 9a = 131.4 + -72
9a = 131.4 + -72

Combine like terms: 131.4 + -72 = 59.4
9a = 59.4

Divide each side by '9'.
a = 6.6

Simplifying
a = 6.6