Răspuns :
fie x nr cautat
5/6+1/3*x=13/12
5/6+x/3=13/12
aducem la acelasi numitor, adica 12⇒10+4x=13
4x=13-10
x=3/4
5/6+1/3*x=13/12
5/6+x/3=13/12
aducem la acelasi numitor, adica 12⇒10+4x=13
4x=13-10
x=3/4