You have:
[ ( 6 ) ( 4 ) ] / [ 15 ] = [ 24 ] / [15 ] = [ 8 ] / [ 5 ] = 8/5 = 1 3/5 <-------------------------
1/4 (simplified from 15/60)
6/8 = 3/4 simplified
Yes. 2/5
2/15
5/6 is.
It is: -6/4 = -3/2
It is 2 over 5
15/90 = 3/18 = 1/6
6/8 can be simplified to 3/4
3/4
6 = 1 24 4
6 over 4 can be simplified by dividing both the numerator and the denominator by their greatest common factor, which is 2. Therefore, 6 divided by 4 simplifies to 3 divided by 2.