Răspuns:
-3/35-(+2/21)-(11/12)-(8/63)=
35=7×5
21=7×3
12=4×3
63=3^2×7
Numitor comun :
4×5×7×9=1260
-3/35 amplific cu 36
2/21 amplific cu 60
11/12 amplific cu 105
8/63 amplific cu 20
36×(-3/35)-60×(+2/21)-105×(11/12)-20×(8/63)=
-108/1260 -(120/1260)-1155/1260-160/1260=
-109-120-1155-160=
-1544/1260= |:4
-356/315
Explicație pas cu pas:
