(3*5+1)/5 + (2*5+2)/5 - х=(3*10+1)/10 - (5*1+1)/5;
(16+12)/5 - х=(31-12)/10;
28/5 - х=19/10;
х=28/5 - 19/10=(56-19)/10=37/10;
х=3целіх 7/10
