1. 4/5 - (-3/10)=

2. 5.5 - 8.1=

3. -5 - 5/3=

4. -8 3/8 - 10 1/6=

5. -4.62 - 3.51=

Step-by-step explanation:

4/5-(-3/10)=4/5+3/10=8/10+3/10=11/10

5.5-8.1=-2.6

-5-5/3=-15/3-5/3=-20/3

-8 3/8-10 1/6=-67/8-61/6=-445/24

-4.62-3.51=-8.13

1/3

Step-by-step explanation:

You would have to add all of the marbles first and that would be the denominator. Then put 12 as the numerator since those are the red marbles. So it would be 12/36, then simplify to get 1/3.