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Svp quelles expressions sont égales ? :
A=8x+3-(6x+3) B=(9x+5) + (-2x+3)
C=(9x+5) + (-2x+3) D=(9x+5) - 2x+3
E=(4x-9) - 2x+7 H=8x+3-6x-2
Mercii

Sagot :

Bonsoir,

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

= 8x +3-6x -3

= 2x

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

= 9x+5 -2x +3

= 7x +8

C=(9x+5) + (-2x+3)

= 9x+5 -2x +3

=7x +8

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

= 9x+5 -2x +3

= 7x +8

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

= 4x-9 -2x +7

= 2x -2

H=8x+3-6x-2

= 2x +1

B=C=D