42=4f-6

Solution for 42=4f-6 equation:

Simplifying
42 = 4f + -6

Reorder the terms:
42 = -6 + 4f

Solving
42 = -6 + 4f

Solving for variable 'f'.

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

Add '-4f' to each side of the equation.
42 + -4f = -6 + 4f + -4f

Combine like terms: 4f + -4f = 0
42 + -4f = -6 + 0
42 + -4f = -6

Add '-42' to each side of the equation.
42 + -42 + -4f = -6 + -42

Combine like terms: 42 + -42 = 0
0 + -4f = -6 + -42
-4f = -6 + -42

Combine like terms: -6 + -42 = -48
-4f = -48

Divide each side by '-4'.
f = 12

Simplifying
f = 12