Никак не пойму, или 15 или 23..
Новое число больше исходного на 2949
<span>(2000-74*21)*(200*609-121530) = </span><span>(2000-1554)*(121800-121530) = </span><span><span>446*270 = 120420</span></span>
1)625:5=125 , 2)848:4=212 , 3) 125+212=337 , 4) 337*9=3033
3(целых)<span>3/8</span> × 1(целых)<span>1/15</span> = <span>3 + 3·8/8</span> × <span>1 + 1·15/15</span> = <span>27/8</span> × <span>16/15</span> = <span>27·16/8·15</span> = <span>432/120</span> = <span><span>18·24/</span><span>5·24</span></span> = <span>18/5</span> = <span>3 + 3·55</span> = 3(целых)<span>3/5</span> = 3.6