<span>12.25*122.6 = 1.225*1226
</span><span>12.26*1.227 < 122.6*12.27
</span>
<span>122.7*122.8 > 1.227*1.228
</span>
<span>1.228*122.9 < 1.228*1229</span>
Ответ:
55 ÷ 11 = 5 (дополнительный множитель)
6×5=30
20+х*4=460
х*4=460-20
х*4=440
х=440*4
х=110
7/9 - 5/6 * 4/15 = 7/9 - 2/9 = 5/9