7f-9=40

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Solution for 7f-9=40 equation: 


Simplifying
7f + -9 = 40

Reorder the terms:
-9 + 7f = 40

Solving
-9 + 7f = 40

Solving for variable 'f'.

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

Add '9' to each side of the equation.
-9 + 9 + 7f = 40 + 9

Combine like terms: -9 + 9 = 0
0 + 7f = 40 + 9
7f = 40 + 9

Combine like terms: 40 + 9 = 49
7f = 49

Divide each side by '7'.
f = 7

Simplifying
f = 7

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