13f=15f-20

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Solution for 13f=15f-20 equation: 


Simplifying
13f = 15f + -20

Reorder the terms:
13f = -20 + 15f

Solving
13f = -20 + 15f

Solving for variable 'f'.

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

Add '-15f' to each side of the equation.
13f + -15f = -20 + 15f + -15f

Combine like terms: 13f + -15f = -2f
-2f = -20 + 15f + -15f

Combine like terms: 15f + -15f = 0
-2f = -20 + 0
-2f = -20

Divide each side by '-2'.
f = 10

Simplifying
f = 10

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