Răspuns:
1.16
2.18
3.83
4.13
5.55
Explicație pas cu pas:
1. 4•(9-5)=
4•4=16
2. 32:8•6:3:4•9=
4•6:3:4•9=
24:3:4•9=
8:4•9=
2•9=18
3. 8•9-18:3+5•9-4•7=
72-6+45-28=
66+45-28=
111-28=83
4. 12+6:(3+9:3)=
12+6:(3+3) =
12+6:6=
12+1=13
5. 100-(24+24:4+5•3) =
100-(24+6+15) =
100-(30+15) =
100-45=55