Not sure how simplified you need it...
8ab-3b+8
Answer: 
Have attached the picture for explanation...
Adding fractions is easy when you get the rules...
10/12 + 6/12...
add the numerator which is the top, and keep the denominator which is the bottom.
10/12 +6/12 = 16/12
change that into a mixed number
16/12 = 1 4/12 which is simplified to 1 1/3
hope this helps
Answer:
-11
Step-by-step explanation:
(9+8-6)(4-5)
(17-6)(-1)
(11)(-1)
-11