In a classroom,
3
-
10
of the students are wearing blue shirts , and
3
-
5
are wearing white shirts. there are 30 students in the classroom. how many students are wearing shirts other than blue shirts or white shirts?

so first you have to make a common denominator of 30 to see how many people in the class.

3/10 • 3 = 9/30
3/5 • 6 = 18/30

then you have to add them together.

18 + 9 = 27

then you subtract 30 from 27.

30 - 27 = 3

so 3 students are wearing shirts other than blue or white

x=9
Base 1=15
Base 2=9