17. / 15 : { 3, , 25. : 26 × 1. ,( 3 ) + 5 : 2 ,( 7 ) - [ 3 , 3. ( 7. ) : 10. , 1 (3. ) - 1 /3 ] }=
=17/15:[325/100 : 26/1 × 13-1 totul supra/9 +5/1 : 27-2 totul supra/9 - (337-33 totul supra/90 : 1013-101 totul supra/90 -1/3)]=
=17/15:[325/100 ×1/26 × 12/9 +5/1: 25/9 - (304/90 : 912/90 -1/3)]=
=17/15:[325/2600 ×12/9 +5/1×9/25-(304/90×90/912 -1/3)]=
=17/15:[325×6 totul supra/1300×9 + 1×9 totul supra/1×5 -(1×1 totul supra/1×3 -1/3)]=
=17/15:[ 1950/11700 +9/5 -( 1/3 -1/3)]=
=17/15:( 1950/11700 +9/5 - 0)=
=17/15: 1950+2340×9 totul supra/11700=
=17/15: 1950+21060 totul supra/11700=
=17/15 : 23010/11700 =
=17/15 × 11700/23010=
=17×780 totul supra/1×23010=
=13260/23010 simplificat cu 10=
=1326/2301 sumplificat cu3=
=442/767
Sper ca ai notat bine exercitiul
