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Sagot :

Réponse:

Bonsoir

a. -3 + x = 7

<=> x = 10

b. x + 8 = 11

<=> x = 3

c. 5x = 19

<=> x = 19/5

d. -2x = 9

<=> x = -9/2

e. 3x + 7x = 50

<=> 10x = 50

<=> x = 5

f. -4x + 9x = 45

<=> 5x = 45

<=> x = 9

Réponse:

Bonsoir :)

Exercice 28

-3+x=7

x=7+3

x=10

x+8=11

x=11-8

x=3

5x=19

x=19/5

x=3,8

-2x=9

-x=9/-2

x=9/2

x=4,5

3x+7x=50

10x=50

x=50/10

x=5

-4x+9x=45

5x=45

x=45/5

x=9

j'espère avoir pu t'aider

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