В секциях забора дядюшки фергуса много дырок .

|-0,63|:|x|=|-0,9|

<span>0,63/х=0,9</span>

<span>х=0,63/0,9</span>

<span>х=0,7</span>

<span>х1=0,7, х2=-0,7</span>

<span>|0,7|=0,7</span>

<span>|-0,7|=0,7</span>

<span>280:(y:12)-14=56</span>

<span>280:(у:12)=56+14</span>

<span>280:(у:12)=70</span>

<span>у:12=280:70</span>

<span>у:12=4</span>

<span>у=12*4</span>

<span>у=48</span>