30=3.2f+1.5f+1.3f

Solution for 30=3.2f+1.5f+1.3f equation:

Simplifying
30 = 3.2f + 1.5f + 1.3f

Combine like terms: 3.2f + 1.5f = 4.7f
30 = 4.7f + 1.3f

Combine like terms: 4.7f + 1.3f = 6f
30 = 6f

Solving
30 = 6f

Solving for variable 'f'.

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

Add '-6f' to each side of the equation.
30 + -6f = 6f + -6f

Combine like terms: 6f + -6f = 0
30 + -6f = 0

Add '-30' to each side of the equation.
30 + -30 + -6f = 0 + -30

Combine like terms: 30 + -30 = 0
0 + -6f = 0 + -30
-6f = 0 + -30

Combine like terms: 0 + -30 = -30
-6f = -30

Divide each side by '-6'.
f = 5

Simplifying
f = 5