b) 4x – 3y – (3 + 3x – y);
b) 4x – 3y – (3 + 3x – y);
b) 4x – 3y – (3 + 3x – y)
= 4x – 3y – 3 ‒ 3x + y
= (4x ‒ 3x) + (– 3y + y) – 3
= x ‒ 2y ‒ 3.