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Sagot :

Bonsoir ,


-2x +3= 1/3
-2x = 1/3 -3
-2x = -8/3
x= 8/3*2 = 8/6 = 4/3




3/7x -3 =2
3/7x = 2+3
3/7x = 5
x = 5*7/3 = 35/3



2x = 2/3 - (2x+1)/5
2x = 10/15 - 3(2x+1)/15
2x = (10-3(2x+1))/15
30x = 10-3(2x+1)
30x = 10 -6x -3
36x = 7
x = 7/36

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