Answer:
8 hours
Step-by-step explanation:
72-16=56
56÷7=8 hours
-7 is the missing exponent
Repeated subtraction is a method of subtracting the equal number of items from a larger group. It is also known as division. If the same number is repeatedly subtracted from another larger number until the remainder is zero or a number smaller than the number being subtracted, we can write that in the form of division
