Răspuns:
(8×9-4:2)-(91-9×9)=(72-2)-(91-81)=70-10=60
100-(27+7×6-48:8):7=1
100-(27+42-6):7=1
100-63:7=1
100-9=1
91=1
(4×8+3×9+21):10:(40-9×4)=
(32+27+21):10:(40-36)
80:10:4=
8:4=
2
56:(100-8×5-6×5-7×3-1)=
56:(100-40-30-21-1)=
56:8=
9
(24+6×2):4+7-(28-12:3):6=8740
(24+12):4+7-(28-4):6=8740
36:4+7-24:6=8740
9+7-4=8740
12=8740
(54:6×3-6×2):3
(9×3-12):3
(27-12):3
15:3
5
(2×3×3):2×(45:9+72:8-16:2)
18:2×(5+9-8)
9×6
54
Sper ca te-am ajutat!!