Solve for x
x=\frac{3}{F+1}
F\neq -1
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Fx+x=3
Add x to both sides.
\left(F+1\right)x=3
Combine all terms containing x.
\frac{\left(F+1\right)x}{F+1}=\frac{3}{F+1}
Divide both sides by F+1.
x=\frac{3}{F+1}
Dividing by F+1 undoes the multiplication by F+1.
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