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2014-09-15T13:25:47+02:00
Exercice n°3 : Résoudre chaque équation :

a)
5x = - 20
x = - 20/5
x = - 4

b)
x + 8 = 0
x = - 8

c)
5 + x = - 20
x = - 20 - 5
x = - 25

d)
9x = 0
x = 0/9
x = 0

e)
x/5= - 20
x = - 20 x 1/5
x = - 20/5
x = - 4

f)
3x - 7 = 0
3x = 7
x = 7/3