а)4/9-1/9=3/9
б)2/3-3/5=1/15
в)3/4-1/8=5/8
г)5/6-1/4=7/12
д)1-7/8=1/8
е)4-1 2/3=7/3=2 1/3
ж)2 5/6-1 5/12=17/6-17/12=17/12=1 5/12
з)3 2/7-6/7=23/7-6/7=17/7=2 3/7
а)4/9-1/9=3/9
б)2/3-3/5=1/15
в)3/4-1/8=5/8
г)5/6-1/4=7/12
д)1-7/8=1/8
е)4-1 2/3=7/3=2 1/3
ж)2 5/6-1 5/12=17/6-17/12=17/12=1 5/12
з)3 2/7-6/7=23/7-6/7=17/7=2 3/7