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Sagot :

MAUDMARINE

Bonjour

Résoudre les équations suivantes

5x -4 =7/2

5x = 7/2 + 4

10x/2 = 7/2 + 8/2

10x = 7 + 8

10x = 15

x = 15/10

x = 3/2

7x/2+3= 1/2-2x/3

7x/2 + 2x/3 = 1/2 - 3

21x/6 + 4x/6 = 3/6 - 9/6

21x + 4x = 3 - 9

25x = - 6

x = - 6/25.

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