Answer:
36
Step-by-step explanation:
Answer: 36
8x+16+6x-60=180
x=16
6(16)-60=36
-2(-x-1)-(x+9)
= -2x + 2 - x - 9
Rearrange
= -2x - x + 2 - 9
= -3x - 7
associative property of multiplication
You cant rlly explain, you just have to know your properties
