svp merciii d’avance

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