72=-fr

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Solution for 72=-fr equation:


Simplifying
72 = -1fr

Solving
72 = -1fr

Solving for variable 'f'.

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

Add 'fr' to each side of the equation.
72 + fr = -1fr + fr

Combine like terms: -1fr + fr = 0
72 + fr = 0

Add '-72' to each side of the equation.
72 + -72 + fr = 0 + -72

Combine like terms: 72 + -72 = 0
0 + fr = 0 + -72
fr = 0 + -72

Combine like terms: 0 + -72 = -72
fr = -72

Divide each side by 'r'.
f = -72r-1

Simplifying
f = -72r-1

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