1) 40:72= 5/9
2) 5/9 - 1/3= 5/9 -3/9 =2/9
3) 2/9 * 2 1/4 = 2/9 * 9/4= 1 /2
4) 1/2 + 8/9= (9+16)/ 18 = 25/18 = 1 7/18
1) 40:72= 5/9
2) 5/9 - 1/3= 5/9 -3/9 =2/9
3) 2/9 * 2 1/4 = 2/9 * 9/4= 1 /2
4) 1/2 + 8/9= (9+16)/ 18 = 25/18 = 1 7/18