Răspunsuri

2014-03-05T21:14:41+02:00
A+b=2,0(7)
a-b=1,2(3)
2a=207-20 +123-12/90
2a=187+111/90
2a=298/90
a=2*90/298
a=180/298
a=0.6
b=187/90 -6/10
b=187-54/90
b=133/90
b=1,4(7)