9f-7=20

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Solution for 9f-7=20 equation: 


Simplifying
9f + -7 = 20

Reorder the terms:
-7 + 9f = 20

Solving
-7 + 9f = 20

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 + 9f = 20 + 7

Combine like terms: -7 + 7 = 0
0 + 9f = 20 + 7
9f = 20 + 7

Combine like terms: 20 + 7 = 27
9f = 27

Divide each side by '9'.
f = 3

Simplifying
f = 3

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