Réponse :
Explications étape par étape
Bonsoir
6/5 + 7/10
= (6 x 2)/(5 x 2) + 7/10
= 12/10 + 7/10
= 19/10
16/10 + 3/30
= 16/10 + 3/(3 x 10)
= 16/10 + 1/10
= 17/10
12/5 - 14/10
= (12 x 2)/(5 x 2) - 14/10
= 24/10 - 14/10
= 10/10
= 1
4/10 - 6/20
= (4 x 2)/(10 x 2) - 6/20
= 8/20 - 6/20
= 2/20
= 2/(2 x 10)
= 1/10
