7-f=18

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Solution for 7-f=18 equation: 


Simplifying
7 + -1f = 18

Solving
7 + -1f = 18

Solving for variable 'f'.

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

Add '-7' to each side of the equation.
7 + -7 + -1f = 18 + -7

Combine like terms: 7 + -7 = 0
0 + -1f = 18 + -7
-1f = 18 + -7

Combine like terms: 18 + -7 = 11
-1f = 11

Divide each side by '-1'.
f = -11

Simplifying
f = -11

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