Answer:
-251x + 75
Explanation:
-150x + 15 - 31x + 60 - 50x - 20x
-251x + 75
(I simplified it by combining all the like terms such as -150x, -31x, -50x, and -20x. Adding all of the negative numbers together gets you negative 251x. Then there are positive 60 and positive 15. Adding both positive numbers together gets you a positive 75. When I put both of the solutions together, I got -251x + 75)