Réponses

2013-12-26T14:31:40+01:00
A)5+x=5+x
b)2x-1x=x
c)4+(5+5x)-5x=4+5+5x-5x=9
d)5x-(6+8)=5x-14
e)4x+8(8-9)=4x+64-72=4x-8
f)4+6x=4+6x
g)5x-6x+5=-x+5
h)9x-3x=6x

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2013-12-26T15:12:52+01:00
Bonjour

a)5+x= 5 +x
b)2x-1x= x
c)4+(5+5x)-5x= 4 + 5 +5x -5x = 9
d)5x-(6+8)= 5x - 6 -8 = 5x -14
e)4x+8(8-9)= 4x + 64 - 72 = 4x - 8
f)4+6x=4 +6x
g)5*x-6x+5=5x - 6x +5 = -x +5
h)9x-3x=