200 + 50 + 5 = 255
-100 + 200 = 100
100 + 50 - 200 - 220 = -270
-90 (when you add a negative you simply subtract so -40-50 is -90)
The sum of -15 and -35 is -50.
-50 - 200 + 100 + 200 - 150 = -100. Your answer is -100. I hope I've helped you.
200 + 50 + 5 = 255
-100 + 200 = 100
Negative 50
-148
2099
-250
100 + 50 - 200 - 220 = -270
-90 (when you add a negative you simply subtract so -40-50 is -90)
100 + 100, 50+50+50+50, or 120+ 90
-250
258