Réponses

  • Utilisateur Brainly
2013-10-05T14:06:24+02:00
x/3=2/5
x=6/5

2x+1/2=1/3
2x=-1/6
x=-1/12

4-x/5=2x-1/3

20-x=10x-5/3
-11x=-65/3
x=65/33
2013-10-05T14:30:56+02:00
1)     x= 6/5
2)     2x= (3+2)/6
       x= 5/12

3)   4+1/3= 2x+x/5
     13/3=11x/5
x =65/33