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Bonjour12311
@Bonjour12311
January 2021
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dans un examen le coefficient de mathématiques est 6 et celui de français 4.
Lisa a une moyenne de 10,5 avec 15 comme note de français.
quelle est sa note de mathématiques ?
aidez moi avant demain
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AhYan
X = la note en maths
(6x+4×15)/10 = 10,5
6x+60 = 10,5×10 = 105
6x = 105-60 = 45
x = 45/6 = 7,5
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(6x+4×15)/10 = 10,5
6x+60 = 10,5×10 = 105
6x = 105-60 = 45
x = 45/6 = 7,5