Bonsoir, pouvez m'aider a résoudre cet exercice ? Merci d'avance:


Résoudre chaque équations:

Vous pouvez choirsir x


-3 + x = 7

5 x = 19

3 x + 7 x =50

x + 8 = 11

-2 x = 9

-4 x + 9 x = 45
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