1) factor the denominators: 2b/(b-1)2 - 2/ (b-1)2
2) MAKE SURE YOU HAVE A COMMON DENOMINATOR
3) combine the numerators: 2b-2/(b-1)2
4) distribute 2 from numerator: 2(b-1)/(b-1)2
5) simplify; answer is 2/(b-1)
 
        
        
        
Answer:
1/5
Step-by-step explanation:
-8-(-10) 2 1
---------- = ------ = --------
1-(-9) 10 5