In a classroom, 1 10 of the students are wearing blue shirts, and 2 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?

To solve this question, (1,10) and (2,5) need to be changed to the denominator of 30. Multiply the 10 by 3 to get (3,30) and 5 by 6 to get (12,30). Add those together to find the other students not wearing blue or white shirts.