<span>7/10</span> - <span>9/100</span> = <span>7·10/10·10</span> - <span>9·1/100·1</span> = <span>70/100</span> - <span>9/100</span> = <span>70 - 9/100</span> = <span>61/<span>100</span></span>
<span>( 72 - 64 : ( 40 - 8х )) : 4 = 256
72 - 64 : (40 - 8x ) = 256 * 4
</span>72 - 64 : (40 - 8x ) = 1024
- 64 : (40 - 8x ) = 1024 - 72
- 64 : (40 - 8x ) = 952
40 - 8x = -64 : 952
40 - 8x = -8/119
8x = 40 + 8/119
8x=40 8/119
x=40 8/119 : 8
x=4768/119 * 1/8
x=596/119
x= 5 1/119
В 2,25 раза!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
16*4 64
48/16 3
64*3 192
Ответ 192 мотоциклист проедет до встречи