Solve for f 21+3f=75

Math
21+3f=75
Move all terms not containing f to the right side of the equation.
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Subtract 21 from both sides of the equation.
3f=75-21
Subtract 21 from 75.
3f=54
3f=54
Divide each term by 3 and simplify.
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Divide each term in 3f=54 by 3.
3f3=543
Cancel the common factor of 3.
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Cancel the common factor.
3f3=543
Divide f by 1.
f=543
f=543
Divide 54 by 3.
f=18
f=18
Solve for f 21+3f=75

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