Răspunsuri

2014-10-04T10:42:39+03:00

311/15:[2/1-22/5*(5/9-1/2)]=

22/5=2*5+2/5=12/5

311/13:[2/1-12/5*(5/9-1/2)]=

5/9 il amplificam cu 2=10/18

1/2 il amplificam cu 9=9/18

311/15:[2/1-12/5*(10/18-9/18)]=

10/18-9/18=1/18

311/15:(2/1-12/5*1/18)=

12/5*1/18=12/90

311/15:(2/1-12/90)=

2/1 il amplificam cu 90=180/90

311/15:(180/90-12/90)=

180/90-12/90=168/90

311/15:168/90⇒311/15*90/168=

simplificam 15 cu 90⇒311/1*6/168=1866/168   

Sper ca te-am ajutat