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Sagot :

3+x:2= 9:4

x/2=9/4-3

0,5x-9/4=-3

0,5x=9/4-3

x=2(9/4-3)

x=18/4-6

x=4,5-6

x=-1,5

Bonjour,

3 + x/2 = 9/4

12/4 + 2x/4 = 9/4

12 + 2x = 9

2x = 9 - 12

2x = - 3

x = - 3/2.

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