2f+1=21

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Solution for 2f+1=21 equation: 


Simplifying
2f + 1 = 21

Reorder the terms:
1 + 2f = 21

Solving
1 + 2f = 21

Solving for variable 'f'.

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

Add '-1' to each side of the equation.
1 + -1 + 2f = 21 + -1

Combine like terms: 1 + -1 = 0
0 + 2f = 21 + -1
2f = 21 + -1

Combine like terms: 21 + -1 = 20
2f = 20

Divide each side by '2'.
f = 10

Simplifying
f = 10

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