W+ 4(w+ 3) = -12

& explain how you got to the answer

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Use the expression below.–4b + 8c + 12 – 8b – 2c + 6part asimplify the expression. enter your answers in the boxes. b + c + part bfactor the simplified expression using the gcf. a. 2(–2b + c + 3) b. 3(–2b + c + 3) c. 4(–2b + c + 3) d. 6(–2b + c + 3)part cwhat is the value of the expression when b = 2 and c = –3? enter your answer in the box.

Solve the given system of equations. 2y= -x+9 , 3x-6= -15