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Sagot :

Explications étape par étape:

A x = 5/3

B. x =1 / 3

c x = - 5 / 14

d. x = 1 / 2

exo 20

a. x = - 1

x = 3

b. x = 7 / 3

x = 4 / 5

c. x = 1 / 2

x = - 2 / 3

d. x = - 9 / 20

e. x = 3

x = 0

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