1)24-15=9
2)24+9=33
Ответ:33груши
<span>_207616<span>2|5478
</span></span><span>1643<span>4 |379
--------
</span></span><span>_4327<span>6
</span></span><span> 3834<span>6
--------------
_</span></span><span>4930<span>2
49302
______
0</span></span>
1\54+1\27=1\54+2\54=3\54=1\18
1)не знаю
2)
а)7,5/2,5=75/25=3
б) 5/3:7/6=5/3×6/7=10/7=1 целя 3/7
20 : 36 = 20 / 36 = 5 / 9.