[15+17:(2/5+1/6)×2 11/45]= aducem paranteza mica la un numitor comun. 30
[15+17:(12+5)/30× 101/45]=
(15+17:17/30×101/45)= aducem paranteza la un numitor comun. 90
[15×90+(17×90):(17×3)× (101×2)]/90=
(1350+1530:51×202)/90=
(1350+30×202)/90=
(1350+6060)/90=
7410/90= simplificam cu 10
741/9=237/3. simplificam cu 3
=79 rezultat final!!!
