Add to both sides of the equation.

Add and .

Divide each term in by .

Cancel the common factor of .

Cancel the common factor.

Divide by .

Divide by .

Solve for x 3x-6=21

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# Solve for x 3x-6=21

Add to both sides of the equation.

Add and .

Divide each term in by .

Cancel the common factor of .

Cancel the common factor.

Divide by .

Divide by .

Solve for x 3x-6=21