1.
1)... = 25/5 + 66/7= 175/35 + 330/35= 505/35= 14целых 15/35=
14целых 3/7
2)...= 34/4+ 23/8= 68/8+23/8=91/8= 11 целых 3/8
2.
1) ....= 19/5- 13/5= 6/5=1целая 1/5
2)....= 2целых 4/9
3.
1) ....=2 целых 1/4
2) ....= 3 целых 6/13
3)...= 3/2+45/7= 21/14+90/14= 111/14= 7 целых 13/14