2)a:b=97 rest 21
a-b=5397 =>a=5397+b
=>(5397+b):b=97 rest 21
5397+b=97b+21
5397-21=97b-b
96 b=5376
b=5376:96
b=56 =>a=5397+56
a=5453
(4a-b:14):8=(4x5453-56:14):8=
=(21812-4):8=
=21808:8=2726
3)a)1568:98:4=1568:4:4
16:4=1568:1
4=1568 ( fals)
b)120620:5:4=200x3+150:5+1
24124:4=600+30+1
6031=6031 (adevarat)