Bonsoir,
Calculer et contrôler avec la calculatrice.
a) 1/5:(-3)
= 1/5 x - 1/3
= - 1/15
b) 3/8:(-6)
= 3/8 x - 1/6
= - 3/48
= (3 x - 1) / (3 x 16)
= - 1/48
c) -15/8:5
= - 15/8 x 1/5
= - 15/40
= (5 x - 3) / (5 x 8)
= - 3/8.
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Bonsoir,
Calculer et contrôler avec la calculatrice.
a) 1/5:(-3)
= 1/5 x - 1/3
= - 1/15
b) 3/8:(-6)
= 3/8 x - 1/6
= - 3/48
= (3 x - 1) / (3 x 16)
= - 1/48
c) -15/8:5
= - 15/8 x 1/5
= - 15/40
= (5 x - 3) / (5 x 8)
= - 3/8.