Question

va rog frumos ajutatima 8 si 9

Answer 1

8)
a) (21:3)×3=7×3=21

b) (81:9)×2=9×2=18

c) (27:9)+(36:6)=3+6=9

d) (9×3)-(9:3)=27-3=24

9)
a) 42:7:3=6:3=2
18:2×8=9×8=72
21:7+19=3+19=22
81:9-8=9-8=1

b) 24:3×2+169=8×2+169=16+169=185
64:8:4×8=8:4×8=2×8=16
28:7×9-17=4×9-17=36-17=19
72:9+36-29=8+7=15