Solve for r
r=v-i
Solve for v
v=r+i
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ir=iv+1
The equation is in standard form.
\frac{ir}{i}=\frac{iv+1}{i}
Divide both sides by i.
r=\frac{iv+1}{i}
Dividing by i undoes the multiplication by i.
r=v-i
Divide 1+iv by i.
1+iv=ir
Swap sides so that all variable terms are on the left hand side.
iv=ir-1
Subtract 1 from both sides.
\frac{iv}{i}=\frac{ir-1}{i}
Divide both sides by i.
v=\frac{ir-1}{i}
Dividing by i undoes the multiplication by i.
v=r+i
Divide ir-1 by i.
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