Răspunsuri

2014-08-07T17:26:21+03:00
7,1(6)-3,1(3)=(716-71)/90-(313-31)/90=645/90-282/90=363/90=(403-40)/90=4.0(3)
sau direct:
  7,1(6) -
  3,1(3)
=4.0(3)