Réponse :
Explications étape par étape
Bonsoir
Carré magique multiplicatif :
A | -5/3 | 4/9
B | -2/3 | C
1 | ....D...| E
Multiplication :
1 x -2/3 x 4/9 = -8/27
-5/3 x -2/3 x D = -8/27
D = -8/27 x -3/5 x -3/2
D = -8/2 x 9/27 x 1/5
D = -4 x 1/3 x 1/5
D = -4/15
A x -5/3 x 4/9 = -8/27
A = -8/27 x -3/5 x 9/4
A = 27/27 x 8/4 x 1/5
A = 2/5
2/5 x -2/3 x E = -8/27
E = -8/27 x 5/2 x -3/2
E = 3/27 x 8/4 x 5
E = 1/9 x 2 x 5
E = 10/9
4/9 x C x 10/9 = -8/27
C = -8/27 x 9/4 x 9/10
C = -81/27 x 8/8 x 1/5
C = -3 x 1/5
C = -3/5
2/5 x B x 1 = -8/27
B = -8/27 x 5/2 x 1
B = -8/2 x 5/27
B = -4 x 5/27
B = -20/27
2/5 .......| -5/3 | 4/9
-20/27 | -2/3 | -3/5
1 ...........| -4/15 | 10/9
