Answer:
17x - 5
Step-by-step explanation:
8x-7+2+9x
Phew, this looks like a mess: Lets split up the terms and sort them.
8x+9x-7+2
now the variables are together, and the constants are together.
Now lets do the math: (Like Terms)
8x + 9x = 17x
-7 + 2 = -5
Now lets put 'em together. 17x - 5