No, 13/15 is a simplified as far down as possible.
Yes.
1/2
1 over 7, or 1/7.
13 over 15 = 13 ÷ 15 = 0.866667
34/51 = 2/3
It is aready in its simplest form as 39/100
180/50 = 18/5 = 33/5
55 percent in simpified fraction is 11/20
13/15
It is: 13/15 plus 1/13 = 184/195
13/15 is greater.
13/15 = 13 ÷ 15 = 0.8667