1)(⅝+2¼)*4=⅞*4=⅞*4/1=7/2=3½
2)4 7/9*3/11-3 5/9*3/11=(4 7/9- 3 5/9)*3/11=1 2/9*3/11=⅓
3)2/9*8/5+8/5*7/9=(2/9+7/9)*8/5=1*8/5=1 ³/5
1)(⅝+2¼)*4=⅞*4=⅞*4/1=7/2=3½
2)4 7/9*3/11-3 5/9*3/11=(4 7/9- 3 5/9)*3/11=1 2/9*3/11=⅓
3)2/9*8/5+8/5*7/9=(2/9+7/9)*8/5=1*8/5=1 ³/5