Answer:
I believe the answer is
x + 4 = 6.5
-4 -4
__________
x = 2.5
Step-by-step explanation:
hope this helps!
We can take prime numbers so they don't have a common factor other than 1.
3, and 5.
So we have to list the multiples to find the LCM
3: 3, 6, 9, 12,
15, 18
5: 5, 10,
15, 20, 25
15 is the LCM of 3 and 5
So, you can notice that if two numbers, lets call them a and b, have no common factor, then

is the LCM.
Hope that helped :)
Answer:
20g
since mass should be in kg or gram if small then g
42/60, x/320. 320/60=5.33333, 42*5.33333=224. So, about 224 students would ride the bus.