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Sagot :

Bonsoir,

1)

10

10-7 = 3

3*5 = 15

15+11 = 26

26*2 = 52

52+8 = 60

2)

A l'envers

110 -8 =102

102/2 =51

51-11 =40

40/5 =8

8+7 = 15

3)

x

x-7

(x-7) * 5 = 5x-35

5x-35 +11 = 5x -24

(5x-24) *2 = 10x -48

10x-48 + 8

= 10x -40

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