Sagot :
Réponse :
9/10 - 2/3 × ( -7/5 ) = 9/10 + [(2/3) × (7/5)]
= 9/10 + 14/15
= 9×15/10×15 + 14×10/15×10
= 135/150 + 140/150
= (135+140)/150
= 275/150
= 11/6
Bonjour,
Calculer:
9÷10-2÷3×(-7÷5)= (9/10) -2/ 3(-7/5) = (9/10) + 2/ 3(7/5)= 9/10+(2/3)(7/5)
= 9/10+14/15= (9x3+14x2)/(15x2)= 55/30= 11/6