18 /85 + 6 5/63 - 7/18 =
9 2/5 + 3/8 - 4 3/20=
3 5/12 + 9 1/6 - 5 1/18=
5 2/3 + 11 7/12 - 4 3/4=
10 1/12 + 2 5/36 -2
7/72=
и найти НОК

18/85+65/63-7/18=75/130;92/5+3/8-43/20=52/7;35/12+91/6-51/18=75/0;52/3+117/12-43/4=126/11;101/12+25/36-27/72=109/54::::::::::♡♡♡♡♡☆☆☆☆☆☆☆☆☆☆