18=9+3f

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Solution for 18=9+3f equation:


Simplifying
18 = 9 + 3f

Solving
18 = 9 + 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 + -3f = 9 + 3f + -3f

Combine like terms: 3f + -3f = 0
18 + -3f = 9 + 0
18 + -3f = 9

Add '-18' to each side of the equation.
18 + -18 + -3f = 9 + -18

Combine like terms: 18 + -18 = 0
0 + -3f = 9 + -18
-3f = 9 + -18

Combine like terms: 9 + -18 = -9
-3f = -9

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

Simplifying
f = 3

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