Réponses

2012-05-04T12:03:38+02:00

13x-5=8x+1

13x-8x=1+5

5x=6

x= 6/5 ( <-- Fraction )

x= 1.2

 

Verification : 13x-5 = 13X1.2-5 = 10.6

                     8x+1 = 8X1.2+1= 1O.6  

                      Donc la solution est : x= 10.6

 

                                                                         ( les petits '' x '' represente le x et les grands X represente les multiplications )