Answer:

Step-by-step explanation:
we know that
The speed is equal to divide the distance by the time
so
The distance is equal to multiply the speed by the time
we have



Convert mixed number to an improper fraction


substitute

Convert to mixed number

Answer:
13
Step-by-step explanation:
a negative plus a negative makes a positive
There are 21 people on each team. First you can divide 252 and 12. You get 21. To check you can then multiply 12 and 21 and get 252
-10 and 2
-10 x 2 = -20
-10 + 2 = -8