a+b=48
4/10a=2/3b
12a=20b
a=20/12b
a=5/4b
5/4b+b=48
9/4b=48
b=48/ 9/4
b=48*4/9
b=64/3=21целая 1/3
a=5/4*64/3
a=80/3=26 целых 2/3
a+b=48
4/10a=2/3b
12a=20b
a=20/12b
a=5/4b
5/4b+b=48
9/4b=48
b=48/ 9/4
b=48*4/9
b=64/3=21целая 1/3
a=5/4*64/3
a=80/3=26 целых 2/3