SVP aider moi dans ces 2 questions

Réponse :

Explications étape par étape

Bonsoir

7/10 + 1/10

= 8/10

= 4/5

= 0,8

7/4 - 1/4

= 6/4

= 3/2

= 1,5

3/7 + 2/7

= 5/7

~ 0,714...

Calculer et simplifier :

7/15 + 3/15

= 10/15

= (2 x 5)/(3 x 5)

= 2/3

5/8 - 1/8

= 4/8

= 4/(2 x 4)

= 1/2

7/9 - 1/9

= 6/9

= (2 x 3)/(3 x 3)

= 2/3

2/10 + 3/10

= 5/10

= 5/(2 x 5)

= 1/2

5/6 - 1/6

= 4/6

= (2 x 2)/(2 x 3)

= 2/3

7/12 - 1/12

= 6/12

= 6/(2 x 6)

= 1/2