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Sagot :

LOUIS1LOL

Réponse :

bonjour

Explications étape par étape :

x + 2 =3/7

x= 3/7 -2

x= -(11/7)

X+(-5/14)= -(5/28)

x - ( 5/14) = -(5/28)

x= -(5/28) + 5/14

x =  -(5/28) + 10 /28

x =5/28

VINS

bonjour

x + 2 = 3 /7

7 x /7 = 3/7 - 14/7

7 x = - 11

x = - 11/7

x - 5/14 = - 5/28

28 x /28 = - 5 /25 + 10/28

28 x = 5

x =  5/28

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