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Sagot :

1. |×-1| =3

×=3+1

×=4

2. |x+2|=6

x= 6-2

x=4

3. | x-3/4| = 1/6

x= 1/6 + 3/4

x= 11/12

4. | x+ 4| = -2

x = -2-4

x = -6

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