18-7f=-9

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Solution for 18-7f=-9 equation: 


Simplifying
18 + -7f = -9

Solving
18 + -7f = -9

Solving for variable 'f'.

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

Add '-18' to each side of the equation.
18 + -18 + -7f = -9 + -18

Combine like terms: 18 + -18 = 0
0 + -7f = -9 + -18
-7f = -9 + -18

Combine like terms: -9 + -18 = -27
-7f = -27

Divide each side by '-7'.
f = 3.857142857

Simplifying
f = 3.857142857

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