Question

ajutati ma va rog urgenttt la cele 4 exercici si la primul care îmi răspunde si la al doilea dau coroana +puncte

Answer 1

1) (56:7+344:8)2×31+17-(500:4+7)=
(8+43)2×31+17-(125+7)=
51+61+17-132=
129-132=
=-3
2) (28×5+30):30):10+729:9-[25×(39-19×2)]×1=
(140+30):30):10+729:9-[29×(39-38)]×1=
270:30:10+729:9-(29×1)×1=
9:10+729-29×1=
0,9+729-29=700,9

3) [(248:8-21×1):10]+(500:50+800:20)×0=
[(31-21):10]+(10+40)×0=
(10:10)+50×0=
1+50×0=
1+0=1
Sper că te-am ajutat!