Question

determianati numerele naturale x asfel incat 2x+1 divide nr 12

Answer 1

divizorii lui 12 sunt: 1,2,3,4,6,12
2x+1=1⇒2x=0⇒x=0
2x+1=2⇒2x=1⇒x=1/2
2x+1=3⇒2x=2⇒x=1
2x+1=4⇒2x=3⇒x=3/2
2x+1=6⇒2x=5⇒x=5/2
2x+1=12⇒2x=11⇒x=11/2