Răspunsuri

2014-09-21T10:58:37+03:00
2014-09-21T11:02:26+03:00
A/8/10=3/2/10 simplificam
a/4/5=3/1/5
1/5*a=4/5*3
a/5=12/5
a=5*12/5
a=12