Rewrite the equation as .

Multiply both sides of the equation by .

Cancel the common factor.

Rewrite the expression.

Subtract from both sides of the equation.

Subtract from both sides of the equation.

Subtract from .

Solve for b a=(a+b+c)/3

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# Solve for b a=(a+b+c)/3

Rewrite the equation as .

Multiply both sides of the equation by .

Cancel the common factor.

Rewrite the expression.

Subtract from both sides of the equation.

Subtract from both sides of the equation.

Subtract from .

Solve for b a=(a+b+c)/3