Solve for A
A=\frac{3}{B}
B\neq 0\text{ and }R\neq 0
Solve for B
B=\frac{3}{A}
A\neq 0\text{ and }R\neq 0
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ARB=R\times 3
Multiply both sides of the equation by R.
ABR=3R
Reorder the terms.
BRA=3R
The equation is in standard form.
\frac{BRA}{BR}=\frac{3R}{BR}
Divide both sides by BR.
A=\frac{3R}{BR}
Dividing by BR undoes the multiplication by BR.
A=\frac{3}{B}
Divide 3R by BR.
ARB=R\times 3
Multiply both sides of the equation by R.
ABR=3R
Reorder the terms.
ARB=3R
The equation is in standard form.
\frac{ARB}{AR}=\frac{3R}{AR}
Divide both sides by AR.
B=\frac{3R}{AR}
Dividing by AR undoes the multiplication by AR.
B=\frac{3}{A}
Divide 3R by AR.
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