The lines mean that the number is going to become positive. |-178| will become positive meaning it will become= |178|
Answer:

Step-by-step explanation:






Answer:
w = .5
Step-by-step explanation:
-4w + 18w+2=10 -6w
14w + 2 -2 = 10 -2 -6w
14w + 2w = 8 - 2w + 2w
16w = 8
16w/16 = 8/16
w = .5