Multiply both sides of the equation by .

Cancel the common factor of .

Cancel the common factor.

Rewrite the expression.

Multiply by .

Subtract from both sides of the equation.

Subtract from .

Solve for a (a+2)/2=-1

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# Solve for a (a+2)/2=-1

Multiply both sides of the equation by .

Cancel the common factor of .

Cancel the common factor.

Rewrite the expression.

Multiply by .

Subtract from both sides of the equation.

Subtract from .

Solve for a (a+2)/2=-1