31=14f+21

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Solution for 31=14f+21 equation:


Simplifying
31 = 14f + 21

Reorder the terms:
31 = 21 + 14f

Solving
31 = 21 + 14f

Solving for variable 'f'.

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

Add '-14f' to each side of the equation.
31 + -14f = 21 + 14f + -14f

Combine like terms: 14f + -14f = 0
31 + -14f = 21 + 0
31 + -14f = 21

Add '-31' to each side of the equation.
31 + -31 + -14f = 21 + -31

Combine like terms: 31 + -31 = 0
0 + -14f = 21 + -31
-14f = 21 + -31

Combine like terms: 21 + -31 = -10
-14f = -10

Divide each side by '-14'.
f = 0.7142857143

Simplifying
f = 0.7142857143

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