6-f=-3f

Solution for 6-f=-3f equation:

Simplifying
6 + -1f = -3f

Solving
6 + -1f = -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.
6 + -1f + 3f = -3f + 3f

Combine like terms: -1f + 3f = 2f
6 + 2f = -3f + 3f

Combine like terms: -3f + 3f = 0
6 + 2f = 0

Add '-6' to each side of the equation.
6 + -6 + 2f = 0 + -6

Combine like terms: 6 + -6 = 0
0 + 2f = 0 + -6
2f = 0 + -6

Combine like terms: 0 + -6 = -6
2f = -6

Divide each side by '2'.
f = -3

Simplifying
f = -3