18=2(f-3)

Solution for 18=2(f-3) equation:

Simplifying
18 = 2(f + -3)

Reorder the terms:
18 = 2(-3 + f)
18 = (-3 * 2 + f * 2)
18 = (-6 + 2f)

Solving
18 = -6 + 2f

Solving for variable 'f'.

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

Add '-2f' to each side of the equation.
18 + -2f = -6 + 2f + -2f

Combine like terms: 2f + -2f = 0
18 + -2f = -6 + 0
18 + -2f = -6

Add '-18' to each side of the equation.
18 + -18 + -2f = -6 + -18

Combine like terms: 18 + -18 = 0
0 + -2f = -6 + -18
-2f = -6 + -18

Combine like terms: -6 + -18 = -24
-2f = -24

Divide each side by '-2'.
f = 12

Simplifying
f = 12