(11 2/11 + х) - 5 4/11 = 8 8/11
(11 2/11 + х) = 8 8/11 + 5 4/11
(11 2/11 + х) = 14 1/11
Х = 14 1/11 - 11 2/11
Х = 13 12/11 - 11 2/11
Х = 2 10/11
_________________
Ответ: х = 2 10/11
Тут просто и легко:
8.316÷36=231
всё.
18*100:25=72
10*100:5=200
55*100:5=1100
9*100:0,3=3000
1,8*100:9=20
16*100:25=64
48*100:6=800
600*100:75=800
6*100:0,3=2000
250*100:200=125
336*100:300=112
11,12,13,22,33,21,31,23,32