Réponse :
Explications étape par étape
Bonjour
Calcul :
-7/5÷ (2/9-7/18)
= -7/5 / (4/18 - 7/18)
= -7/5 / (-3/18)
= 7/5 x 18/3
= 7/5 x 6
= 42/5
(4/5+3/2)÷(-9/4 - 1/6)
= (8/10 + 15/10) / (-27/12 - 2/12)
= 23/10 / (-29/12)
= 23/10 x -12/29
= -23/29 x 12/10
= -23/29 x 6/5
= -38/145
