24 72 120
162 90 18
115 69 23
4 11/48*6/7-1 4/9=203/48*6/7-13/9=29/8-13/9=261-104/72=157/72=2 13/72
(2/3+5/8-11/12)*5 1/3=(16/24+15/24-22/24)*16/3=9/24*16/3=18
15 4/7-4 3/8*(1 3/7-34/35)=109/7-35/8*(10/7-34/35)=109/7-35/8*(50-34/35)=109/7-35/8*26/35=109/7-13/4=436-91/28=345/28=12 9/28
55*666=36630- наибольший отве
-3,7 × (2,5х - 7,6) = -3,66 + 2,1х;
9,25х - 28,12 = 3,66 + 2,1х;
9,25х + 2,1х = 3,66 + 28,12;
11,35х = 31,78;
х = 31,78 ÷ 11,35;
х = 2,8;
Ответ: 2,8.