f-18=18+3f

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Solution for f-18=18+3f equation:


Simplifying
f + -18 = 18 + 3f

Reorder the terms:
-18 + f = 18 + 3f

Solving
-18 + f = 18 + 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.
-18 + f + -3f = 18 + 3f + -3f

Combine like terms: f + -3f = -2f
-18 + -2f = 18 + 3f + -3f

Combine like terms: 3f + -3f = 0
-18 + -2f = 18 + 0
-18 + -2f = 18

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

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

Combine like terms: 18 + 18 = 36
-2f = 36

Divide each side by '-2'.
f = -18

Simplifying
f = -18

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