Verified answer

Bonjour;

(-4 *5*-3)/( 7*6*7)

= 60/294

= 20/ 98

= 10/ 49

5/8 *3/3 = 15/24

7/6*4/4 = 28/24

15/24 - 28/24 = 13/24

8/5*7/7 = 56/35

56/35+3/35 = 59/35

13/24 * 59/35 = 767/ 840

Réponse:

voici les réponses, ci-joint.