Solve for r
r=\frac{42}{x}
x\neq 0
Solve for x
x=\frac{42}{r}
r\neq 0
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xr=42
Cancel out \pi on both sides.
\frac{xr}{x}=\frac{42}{x}
Divide both sides by x.
r=\frac{42}{x}
Dividing by x undoes the multiplication by x.
xr=42
Cancel out \pi on both sides.
rx=42
The equation is in standard form.
\frac{rx}{r}=\frac{42}{r}
Divide both sides by r.
x=\frac{42}{r}
Dividing by r undoes the multiplication by r.
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