Explicație pas cu pas:
9×(9 968:8+89)-1275:5=
9×(1 246+89)-1275:5=
9×1335-1275:5=
12 015-255=
11 760
1574+54:9+(32:2+4)-2×542=
1574+54:9+(16+4)-2×542=
1574+54:9+20-2×542=
1574+6+20-1 084=
1580+20-1084=
1600-1084=
516
12×[25:(35×25-34×25)+256:4]-60=
12×[25:(875-850)+256:4]-60=
12×(25:25+256:4)-60=
12×(1+64)-60=
12×65-60=
780-60=
720
