Remove parentheses.

Add and .

Add and .

Simplify each term.

Apply the distributive property.

Multiply by .

Multiply by .

Add and .

Apply the distributive property.

Multiply by .

Multiply by .

Multiply by .

Add and .

Add and .

Combine -3y^2-(2y-(13y^2-5y))-(-9+(-14y+9))