,

Add to both sides of the equation.

Subtract from both sides of the equation.

Simplify .

Simplify each term.

Apply the distributive property.

Simplify.

Multiply by .

Multiply by .

Multiply by .

Simplify by adding terms.

Subtract from .

Add and .

Move all terms not containing to the right side of the equation.

Subtract from both sides of the equation.

Add to both sides of the equation.

Subtract from .

Divide each term by and simplify.

Divide each term in by .

Cancel the common factor of .

Cancel the common factor.

Divide by .

Move the negative in front of the fraction.

Simplify each term.

Apply the distributive property.

Multiply .

Multiply by .

Combine and .

Multiply by .

Combine and .

Move the negative in front of the fraction.

Simplify the expression.

Write as a fraction with a common denominator.

Combine the numerators over the common denominator.

Subtract from .

To write as a fraction with a common denominator, multiply by .

Simplify terms.

Combine and .

Combine the numerators over the common denominator.

Combine the numerators over the common denominator.

Simplify the numerator.

Multiply by .

Subtract from .

Reorder and .

Solve in Terms of the Arbitrary Variable z x-8y+z=1 , 3x-y+2z=1