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Sagot :

Réponse:

a) 3x-2x=4-5

x=-1

b) 8x-3=3x-10

8x-3x=-10+4

5x=-6

x= -6/5

x= -1,2

c) 5-2x=7x-6

-2x-7x=-6-2

-9x=-8

x= 8/9

d) 3+4x=-5x+5

4x+5x = 5-3

9x= 2

x= 2/9

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