3eme
Bonjour !
Résoudre les équations suivantes :
a. 4(2x - x) + 5 = -3(2x + 3) - 12
b. (3x + 1 )/4 = (5x - 2)/5
c. x/3 + 5/6 = 1/2 - x
d. x - ( x + 1 ) = ( x + 3 ) - ( x - 3 )
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