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Sagot :

LINA4161
Bonsoir,

1) -13/6+b=-3
b=-3+13/6
b=-5/6

2) 2/3+b=-13/6
b=-13/6-2/3
b=-17/6

3) -17/6+b=-5/6
b=-5/6+17/6
b=2

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