There were 56 runners to start a race. In the first half of the race, h of them dropped out. In the second half of the race, z of the remaining runners dropped out. How many runners finished the race?

56-h-z runners

Step-by-step explanation:

The only number we're given is 56, so the only thing that we can do is create an expression

56 - h - z

Step-by-step explanation:

-h - z is the number of people who dropped out at any time in the race.

56 is the total amount, and you put -h - z behind it.

Therefore, you get 56 - h - z.

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

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