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Sagot :

NAYLO
a) 2x+1=0
1=-2x
x=-2/1= -2
b)2x+1=1-3x
2x+3x= 1-1
5x=0
x= 0/5=0
c) 2x+1=5
2x=1-5
2x=-4
x= -4/2 = -2
En espérant que ça te fasse plaisir


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