Réponses

2014-03-30T23:39:12+02:00
X = 6
x+8 = 6 + 8
x+8 = 14

x = -4
x+2.5 = -4+2.5
x+2.5 = -1.5

x = 1.2
x-2.3 = 1.2-2.3
x-2.3 = -1.1

x = 7
-9x = 7*-9 (* signifie multiplié par)
-9x = -63

x = 2.5
x/5 = 2.5/5
x/5 = 0.5

x = -3
x/7 = -3/7