Avery411: :? What is
650+530+52+-28+-75
Whenever there is an addition sign in front of a negative sign, it means minus. So 52+-28 is the same as 52-28. Just think of the addition sign not being in front of the negative sign. So 650+530+52+-28+-75 is the same as 650+530+52-28-75. So 650+530+52-28-75=1129. It's easy
