Apply the distributive property.

Multiply.

Multiply by .

Multiply by .

Apply the distributive property.

Apply the distributive property.

Apply the distributive property.

Simplify each term.

Multiply by .

Multiply by .

Rewrite using the commutative property of multiplication.

Multiply by .

Rewrite using the commutative property of multiplication.

Multiply by .

Multiply by .

Multiply by .

Add and .

Move .

Add and .

Multiply -3(7x-3y)(2x-9y)