33 - 6 + 25 - 17 = 27 + 25 -17 = 52 -17= 35

53+ 12 - 15 + 17= 65 - 15 + 17= 50 + 17 =  67

45 + 25 - 18 + 101 =70 - 18 + 101 = 52 + 101 = 153

64 - 16 + 19 - 2 = 48 + 19 -2 = 67 -2 = 65