30=f*2.5

Solution for 30=f*2.5 equation:

Simplifying
30 = f * 2.5

Reorder the terms for easier multiplication:
30 = 2.5f

Solving
30 = 2.5f

Solving for variable 'f'.

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

Add '-2.5f' to each side of the equation.
30 + -2.5f = 2.5f + -2.5f

Combine like terms: 2.5f + -2.5f = 0.0
30 + -2.5f = 0.0

Add '-30' to each side of the equation.
30 + -30 + -2.5f = 0.0 + -30

Combine like terms: 30 + -30 = 0
0 + -2.5f = 0.0 + -30
-2.5f = 0.0 + -30

Combine like terms: 0.0 + -30 = -30
-2.5f = -30

Divide each side by '-2.5'.
f = 12

Simplifying
f = 12