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Meilleure réponse !
2014-04-28T21:26:25+02:00
Exercice 24

a)
4x = 2x + 3
4x - 2x = 3
2x = 3
x = 3/2
x = 1,5

c)
11 + 8x = 2 - 3x
8x + 3x = 2 - 11
11x = - 9
x = -9/11
2014-04-28T21:29:09+02:00
4x=2x+3
4x-2x=2x+3-2x
2x=3
2x sur 2 =3 sur 2
x=1.5


11+8x=2-3x
11+8x+3x=2-3x+3x
11+11x=2
11+11x-11=2-11
11x=-9
11x sur 11 = -9 sur 11
x=-9 sur 11