4f+7=21-3f

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Solution for 4f+7=21-3f equation:


Simplifying
4f + 7 = 21 + -3f

Reorder the terms:
7 + 4f = 21 + -3f

Solving
7 + 4f = 21 + -3f

Solving for variable 'f'.

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

Add '3f' to each side of the equation.
7 + 4f + 3f = 21 + -3f + 3f

Combine like terms: 4f + 3f = 7f
7 + 7f = 21 + -3f + 3f

Combine like terms: -3f + 3f = 0
7 + 7f = 21 + 0
7 + 7f = 21

Add '-7' to each side of the equation.
7 + -7 + 7f = 21 + -7

Combine like terms: 7 + -7 = 0
0 + 7f = 21 + -7
7f = 21 + -7

Combine like terms: 21 + -7 = 14
7f = 14

Divide each side by '7'.
f = 2

Simplifying
f = 2

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