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Sagot :

Bonjour,

5x 7=0

5x = -7

x = -7/5

7x - 4 = 2x + 6

7x - 2x = 6 + 4

5 x = 10

x = 2

J'espère t'avoir aidé

Bonsoir,

5x 7=0

Il manque un signe.

5x+7 ?

5x+7 = 0

5x= -7

x= -7/5

5x-7?

5x-7 = 0

5x= 7

x= 7/5

7x - 4 = 2x + 6

7x-2x  =6+4

9x = 10

x= 9/10

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