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Sagot :

FATSOME2003

Réponse :

Explications étape par étape

a) 4x - 2x = 13 - 7

2x = 6.....x = 6/2=3

b) x - 5x = 10 +2

   -4x = 12...........x = 12/-4  =  -3

c) -3x + 7x = -4 +8

   4x =4.......x = 4/4 = 1

d) 2t -5t = 12 - 5

-3t = 7......t = 7/-3

Adam

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