31=f-19

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Solution for 31=f-19 equation:


Simplifying
31 = f + -19

Reorder the terms:
31 = -19 + f

Solving
31 = -19 + f

Solving for variable 'f'.

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

Add '-1f' to each side of the equation.
31 + -1f = -19 + f + -1f

Combine like terms: f + -1f = 0
31 + -1f = -19 + 0
31 + -1f = -19

Add '-31' to each side of the equation.
31 + -31 + -1f = -19 + -31

Combine like terms: 31 + -31 = 0
0 + -1f = -19 + -31
-1f = -19 + -31

Combine like terms: -19 + -31 = -50
-1f = -50

Divide each side by '-1'.
f = 50

Simplifying
f = 50

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