Solve for x
x=\frac{f+2}{7}
Solve for f
f=7x-2
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7x-2=f
Swap sides so that all variable terms are on the left hand side.
7x=f+2
Add 2 to both sides.
\frac{7x}{7}=\frac{f+2}{7}
Divide both sides by 7.
x=\frac{f+2}{7}
Dividing by 7 undoes the multiplication by 7.
Examples
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Matrix
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Simultaneous equation
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Integration
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Limits
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