7f-20=3f

Solution for 7f-20=3f equation:

Simplifying
7f + -20 = 3f

Reorder the terms:
-20 + 7f = 3f

Solving
-20 + 7f = 3f

Solving for variable 'f'.

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

Add '-3f' to each side of the equation.
-20 + 7f + -3f = 3f + -3f

Combine like terms: 7f + -3f = 4f
-20 + 4f = 3f + -3f

Combine like terms: 3f + -3f = 0
-20 + 4f = 0

Add '20' to each side of the equation.
-20 + 20 + 4f = 0 + 20

Combine like terms: -20 + 20 = 0
0 + 4f = 0 + 20
4f = 0 + 20

Combine like terms: 0 + 20 = 20
4f = 20

Divide each side by '4'.
f = 5

Simplifying
f = 5