350*10=350 строк на 10 страницах
350*х=350х знаков на 10 страницах
0,7х-0,4х-0,97=12,73
0,3х=12,73+0,97
0,3х=13,7
х=13,7:0,3
х=137/10:3/10
х=137/3
х=45 2/3
26/5=5 (1ост.)
29/4=7 (1ост.)
13/3=4<span> (1ост.)
9/2=8 </span><span> (1ост.)
</span>19/6=3 <span> (1ост.)
</span>39/4=9 <span> (1ост.)
</span>1/5=0<span> (1ост.)
</span>26/3=8<span> (1ост.)
</span>30/4=7<span> (1ост.)
</span>13/2=<span> 6 (1ост.)</span>