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Sagot :

A = H car 8x +3 - (6x+2) = 8x + 3 -6x -2
B = D car (9x +5) + (-2x +3) = (9x +5) -2x +3
C = E car (4x -9)-(2x-7) = (4x-9) -2x +7
ELEALBRT

Réponse:

A=H

B=D

C=E

Explications étape par étape:

Il faut les développer

A= 8x+3-(6x+2) = 2x+1

B= (9x+5)+(-2x+3) = 7x+8

C= (4x-9)-(2x-7) = 2x-2

D= (9x+5)-2x+3 = 7x+8

E= (4x-9)-2x+7 = 2x-2

H= 8x+3-6x-2 = 2x+1

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