Réponse :
Explications étape par étape
Bjr,
A: 2x
B : 5x
C: x
D: 3
E: x+1
F: 4x-2
G: 7x -1
H: 3x +2
I: 8x -1
A+D = 2x + 3
B+E+H = 5x+ x+1+3x+2= 9x + 3
C+F+I = x+4x-2 +8x-1 = 13x -3
A+B+C = 2x+5x + x = 8x
D+E+F = 3+x+1 +4x-2 = 5x +2
G+H+I = 7x-1 +3x+2+8x-1 = 18x
A+E+I = 2x + x+1+8x-1 = 11x
G+E -C = 7x-1 + x+1 - x = 8x
A+G+I+C = 2x + 7x-1 + 8x-1 + x = 18x -2
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