Réponse :
Explications étape par étape
Bonjour
Recopier et compléter :
7/3 x .../... = 28/15
.../... = 28/15 x 3/7
.../... = 28/7 x 3/15
.../... = (7 x 4)/7 x 3/(3 x 5)
.../... = 4/3 x 1/5
.../... = 4/15
7/3 x 4/15 = 28/15
11/17 x .../... = 1
.../... = 1 x 17/11
.../... = 17/11
11/17 x 17/11 = 1
7/2 x .../... = 3/10
.../... = 3/10 x 2/7
.../... = 2/10 x 3/7
.../... = 2/(2 x 5) x 3/7
.../... = 1/5 x 3/7
..../... = 3/35
7/2 x 3/35 = 3/10
1,5/2 x .../... = 9/20
.../... = 9/20 x 2/1,5
.../... = 9/1,5 x 2/20
../... = (1,5 x 6)/1,5 x 2/(2 x 10)
.../... = 6 x 1/10
.../... = (2 x 3)/(2 x 5)
.../... = 3/5
1,5/2 x 3/5 = 9/20
