Réponses

2014-05-01T20:42:03+02:00
2014-05-01T20:45:58+02:00
2x-49/35+x+77/14=-28/7
2x+x=49/35-77/14-28/7
3x=7/5-11/2-4
3x=(14-55-40)/10
3x= - 81/10
x= - 81/(10*3)
x= - 27/10