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Sagot :

Réponse:

8x-30x= -7+30

-22x=23

x=23/-22

Bonjour,

8x - 30 = 30x - 7

8x - 30x = -7 + 30

-22x = 23

-22x / -22 = 23 / -22

x = - 23 / 22

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