Răspuns :

Maryanahey25id

Explicație pas cu pas:

a)4×(6+4)=4×10=40

8×(9-5)=8×4=32

9×(7+2)=9×9=81

Davidmelania2017id

Explicație pas cu pas:

a)

4×(6+4)

6+4=10

4×10=40

8×(9-5)

9-5= 4

8×4=32

9×(7+2)

7+2=9

9×9=81

b)40-2×(9-6)

9-6=3

40-2×3

2×3=6

24+3:(9-6)

9-6=3

24+3:3

3:3=1

24+1=25

(7+8):(27:9)

7+8=15

15:(27:9)

27:9=3

15:3=5

c) 4+10×(6+3)

6+3=9

4+10×9

10×9=90

4+90=94

2×(9+0):6+7

9+0=9

2×9:6+7

2×9=18

18:6+7

18:6=3

3+7=10

(10×3+2):4×5

10×3=30

30+2=33

32:4×5

32:4=8

8×5=40

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