-8/5
Rise over run aka how many it goes up/down over how many it goes across
336 divided by 12. The answer is the number of cartons

Not much more to say about this. Just multiply the integer by the coefficient.
a cheap way to go about it is, let's do away with the denominators, and we'll do so by simply multiplying both sides by the the LCD of all fractions, in this case, that'd be "ab", so we multiply both sides by "ab".

Answer:

Step-by-step explanation:
Let s be the number of students in each of 6 buses. Then there are 6s students in all buses.
Five of the students ride in a van. In total, in a van and in buses there are
students.
There are 221 students on a filed trip. So,
