Bonjour pouvez vous m'aidez pour cette question en maths svp ! (Fraction)
Calculer :
8/5-3/7 8/5+3/7
2/7+4/9 3/8-5/3
Calculer :
8/5-3/7 8/5+3/7
2/7+4/9 3/8-5/3
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Verified answer
Réponse:
8/5-3/7= 41/35
8/5+3/7= 71/35
2/7+4/9= 46/63
3/8-5/3= -31/24
Verified answer
Bonjour,
8/5-3/7=8*7/5*7-3*5/7/5=56/35-15/35=(56-15)/35=41/35
8/5+3/7=8*7/5*7+3*5/7/5=56/35+15/35=(56+15)/35=71/35
2/7+4/9=2*9/7*9+4*7/9*7=18/63+28/63=(28+18)/63=46/63
3/8-5/3=(3*3)/(8*3)-(5*8)/(3*8)=9/24-40/24=(9-40)/24=-31/24