42/28=1,5
54/81= 2*27/3*27=2/3
85\55=<span>17·5/11·5</span> = <span>17/11</span> = <span>6 + 1·11/11</span> = 1 <span>6/<span>11 одна целая
</span></span>360\30= <span>12·30/30</span><span> = 12
</span>210\105=<span>2·105/105</span><span> = 2
</span>600\1400=<span>3·200/7·200</span> = <span>3/<span>7
</span></span>162\135=<span>6·27/5·27</span> = <span>6/5</span> = <span>1 + 1·5/5</span> = 1 <span>1/<span>5
</span></span>500\375= <span>4·125/3·125</span> = <span>4/3</span> = <span>1 + 1·3/3</span> = 1 <span>1/<span>3</span></span>
-(3 5/9 - 2 2/15)/9,6+0,6*5/6 = - ( 1 5/9 - 2/15) : 9,6 + 6/10 * 5/6 = - ( 1 25/45 - 6/45) : 9,6 + 1/2 = - 1 19/45 : 9,6 + 1/2 = - 64/45 * 10/96 + 1/2 = - 4/27 + 1/2 = - 8/54 + 27/54 = 19/54
1-7 3начков
2-8 значков
осталось 45 значков
было-?
45+7+8=60
S (площ.поверх) = 6Н^2 , где Н - ребро куба