Răspunsuri

  • Utilizator Brainly
2014-11-08T16:49:47+02:00
15/x+2∈N
x+2|15⇒x+2∈{0,1,3,5,15}|-2
             x∈{1,3,13}

17/2x-1∈N
2x-1|17⇒2x-1∈{0,1,17}|+1
              2x∈{1,2,18}
              x∈{1,9}
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