calcul détaillé •4/3÷-2/7 •2/5+8/5×1/3 •(4/3-2)÷(5/7+2/5)
Mathématiques
charlinetochon180508
Question
calcul détaillé
•4/3÷-2/7
•2/5+8/5×1/3
•(4/3-2)÷(5/7+2/5)
•4/3÷-2/7
•2/5+8/5×1/3
•(4/3-2)÷(5/7+2/5)
1 Réponse
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1. Réponse hirondelle52
Bonjour!!
•4/3÷-2/7
=4/3* -7/2
= -28/6
= - 14/3
•2/5+8/5×1/3
= 2/5 + 8/15
= 6/15 +8/15
= 14/15
•(4/3-2)÷(5/7+2/5)
=(4/3- 6/3) / (- 25/35+ 14/35)
= -2/3 / -11/35
= -2/3 * -35/11
= 70/ 33