Răspunsuri

2014-09-19T08:34:04+03:00
A)  6= 4+2
   12=7+5
   18+15+3
b)D6∈{1,2,3,6}
  D12∈{1,2,3,4,6,12}
  D18∈{1,2,3,6,9,18}

1 5 1