Bonsoir, J'ai besoin de votre aide pour ce carré magique svp:​

Réponse :

Explications étape par étape

Bonsoir

Somme :

20/7 + 5/14 + 15/7 = 40/14 + 5/14 + 30/14 = 75/14

20/7 | 5/14 | 15/7

15/14 | A ....| B

C ......| D ....| E

20/7 + 15/14 + C = 75/14

C = 75/14 - 20/7 - 15/14

C = 60/14 - 40/14

C = 20/14

C = 10/7

10/7 + A + 15/7 = 75/14

A = 75/14 - 20/14 - 30/14

A = 25/14

15/14 + 25/14 + B = 75/14

B = 75/14 - 15/14 - 25/14

B = 35/14

B = 5/2

5/14 + 25/14 + D = 75/14

D = 75/14 - 5/14 - 25/14

D = 45/14

10/7 + 45/14 + E = 75/14

E = 75/14 - 20/14 - 45/14

E = 10/14

E = 5/7

20/7 | 5/14 ...| 15/7

15/14 | 25/14.| 5/2

10/7 .| 45/14 .| 5/7