Rewrite the equation as .

Multiply both sides of the equation by .

Remove parentheses.

Multiply by .

Add to both sides of the equation.

Rewrite the equation as .

Factor each term.

Remove parentheses.

Subtract from .

Add and .

Reduce the expression by cancelling the common factors.

Reduce the expression by cancelling the common factors.

Cancel the common factor.

Rewrite the expression.

Divide by .

Solve in Terms of the Arbitrary Variable U I=(R-U)/S