Sagot :
A)3/8+(-5/6)
=(18-40)/48
=-22/48
=(-22÷2)/(48÷2)
=-11/24
B)(-10/3)×(-18/35)
=-(10×18)/(35×3)
=-180/105
=-(180÷15)/(105÷15)
=-12/7
C)10/7÷5/3
=10/7×3/5
=(10×3)/(7×5)
=30/35
=(30÷5)/(35÷5)
=6/7
Réponse :
Explications étape par étape :
Bonsoir
somme de 3/8 et -5/6
A = 3/8 - 5/6 = 9/24-20/24 = -11/24
produit de -10/3 et - 18/35
B = (-10/3) × (-18/35) = (10 × 18)/(3×35)
B = (2×5×3×6)/(3×7×5) = 12/7
C = (10/7 ) / (5/3) = (10/7) × (3/5)
C = (10×3)/(7×5) = (2×5×3)/(7×5)=6/7
C = 6/7