salam l7bab lyouma jbtlkoum des exercices 3la dawal من اعداد الاستاذ المحترم بوبكر 
42voir et non repondre
dsl frere wlah mana3ref llmath
thank youuuuuuuuuuuu my friend
not at all sister 
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♥ merci bcp manel
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2r1 