Răspuns :
(81:9+42:6):4+(30-17)=
(9+7):4+13=
16:4+13=
4+13=17
(64:8+24:6):3+(40-28)=
(8+4):3+12=
12:3+12=
4+12=16
(9+7):4+13=
16:4+13=
4+13=17
(64:8+24:6):3+(40-28)=
(8+4):3+12=
12:3+12=
4+12=16