=(1.02*50-7.26*70/11)/(3+1/5)+(0.4/0.36)=47/18=2 11/18
1,02;1/50=1,02·50=51
7,26:11/70=7,26·70/11=508,2/11=46,2
(..)=51-46,2=4,8
4,8 : 3 1/5=4,8 : 3,2=48/32=1,5=3/2=27/18;
0,4:0,36=4:3,6=40:36=10/9=20/18;
весь пример 27/18+20/18=47/18=(36+11)/18=(36/18)+(11/18)=2 11/18