Respuesta :

jacintaemmaculate5

= ×150

Step-by-step explanation:

  1. ×3+3×2-21×-28÷4 use BODMAS,now we start with division bcoz there isno bracket or of.
  2. -28÷4= -7 then we go to multiplication
  3. ×3+3×2-21×-7 .......3×2=6
  4. ×3+6-21×-7......-21×-7 =147........then we finally add
  5. ×3+147=×150