3.2(f+9)=64

Solution for 3.2(f+9)=64 equation:

Simplifying
3.2(f + 9) = 64

Reorder the terms:
3.2(9 + f) = 64
(9 * 3.2 + f * 3.2) = 64
(28.8 + 3.2f) = 64

Solving
28.8 + 3.2f = 64

Solving for variable 'f'.

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

Add '-28.8' to each side of the equation.
28.8 + -28.8 + 3.2f = 64 + -28.8

Combine like terms: 28.8 + -28.8 = 0.0
0.0 + 3.2f = 64 + -28.8
3.2f = 64 + -28.8

Combine like terms: 64 + -28.8 = 35.2
3.2f = 35.2

Divide each side by '3.2'.
f = 11

Simplifying
f = 11