4f+5=21

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Solution for 4f+5=21 equation:


Simplifying
4f + 5 = 21

Reorder the terms:
5 + 4f = 21

Solving
5 + 4f = 21

Solving for variable 'f'.

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

Add '-5' to each side of the equation.
5 + -5 + 4f = 21 + -5

Combine like terms: 5 + -5 = 0
0 + 4f = 21 + -5
4f = 21 + -5

Combine like terms: 21 + -5 = 16
4f = 16

Divide each side by '4'.
f = 4

Simplifying
f = 4

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