8x-5+3x-10+2x

Simplify the following:
8 x+3 x+2 x-10-5

Grouping like terms, 8 x+3 x+2 x-10-5 = (8 x+3 x+2 x)+(-5-10):
(8 x+3 x+2 x)+(-5-10)

8 x+3 x+2 x = 13 x:
13 x+(-5-10)

-5-10 = -15:
Answer: |  13x - 15