Réponses

2013-12-05T19:32:54+01:00


(2x+1)/(x-1) = 1

2x+1 = 1fois(x-1)

2x+1 = x-1

2x-x = (-1) +(-1)

x = -2


(2x-3)/(x+1) = 5/3

3fois(2x-3) = 5fois(x+1)

3fois2x-3fois3 = 5foisx+5fois1

6x-9 = 5x +5

6x - 5x = 5 +9

x = 14



8/x = 4/5

8fois5 = 4foisx

40 = 4x

x= 40/4

x =10



3/x = 12

x = 3/12

x = 1/4

x = 0,25


voila j espere que tu comprendras