,

Subtract from both sides of the equation.

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.

Replace all occurrences of in with .

Simplify .

Simplify each term.

Apply the distributive property.

Cancel the common factor of .

Factor out of .

Cancel the common factor.

Rewrite the expression.

Multiply by .

Cancel the common factor of .

Move the leading negative in into the numerator.

Factor out of .

Cancel the common factor.

Rewrite the expression.

Multiply by .

Combine the opposite terms in .

Add and .

Add and .

Remove any equations from the system that are always true.

Solve by Substitution 3x+4y=4 , 6x+8y=8