Qui peut m’aider ? svp

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