Bonjour je ne comprends pas mon dm de math pouvez vous m aider svp merci

Bonjour

1)

60) [5 + 2 x (8 - 2)] x 3

= (5 + 2 x 6) x 3

= (5 + 12) x 3

= 17 x 3

= 51

7) 4 x 7 + 3 x 9

= 28 + 27

= 55

6) 25 - [16 - (9 + 4)]

= 25 - (16 - 13)

= 25 - 3

= 22

55) (5 - 3) x (16 : 2 + 6 : 3)

= 2 x (8 + 2)

= 2 x 10

= 20

16) 1 + 2 x 3 + 4 x 5

= 1 + 6 + 20

= 27

27) 15 : 3 - 32/8 + 3 x 6

= 5 - 4 + 18

= 19

3) [15 : (3 + 2) - 1] x 6

= (15 : 5 - 1) x 6

= (3 - 1) x 6

= 2 x 6

= 12

51) [7 + 2 x (4 + 5)] : 5

= (7 + 2 x 9) : 5

= (7 + 18) : 5

= 25 : 5

= 5

2) 33 - (9,7 + 8,3)

= 33 - 18

= 15

12) 49 / (35 : 5)

= 49 : 7

= 7

22) (3 x 5 - 7) / 4

= (15 - 7) / 4

= 8/4

= 2

5) [12 - (6 + 4)] x 8

= (12 - 10) x 8

= 2 x 8

= 16

20) 15 x (6,4 - 2 x 1,2)

= 15 x (6,4 - 2,4)

= 15 x 4

= 60

19) 30 : [(11 - 9) x 2 + 1]

= 30 : (2 x 2 + 1)

= 30 : 5

= 6

15) (19 + 8) : (5 + 4)

= 27 : 9

= 3.

2) Tu mettras les dominos en place.