Combining like terms although there has to be two terms
y-9+y-4

2y - 13

Step-by-step explanation:

y - 9 + y - 4

2y - 9 - 4

2y - 13

Step-by-step explanation:

Here, "combining like terms" would require y + y -9 - 4, or 2y - 13.  Order is unimportant here.

The answer is 0.625

Step-by-step explanation:

So first the probability is

7/8

As continues without replacement

6/7

5/6

multipyl

0.625