1) 7/9 = (7*3)/(9*3) = 21/27 > 20/27 2) 11/18 = (11*4)/(18*4) = 44/72; 17/24 = (17*3)/(24*3) = 51/72 44/72 < 51/72; 11/18 < 17/24 3) 7/15 = (7*5)/(15*5) = 35/75; 9/25 = (9*3)/(25*3) = 27/75 35/75 > 27/75; 7/15 > 9/25
1.
2.
3.
1) 7/9 = (7*3)/(9*3) = 21/27 > 20/27 2) 11/18 = (11*4)/(18*4) = 44/72; 17/24 = (17*3)/(24*3) = 51/72 44/72 < 51/72; 11/18 < 17/24 3) 7/15 = (7*5)/(15*5) = 35/75; 9/25 = (9*3)/(25*3) = 27/75 35/75 > 27/75; 7/15 > 9/25
1.
2.
3.