Réponses

2013-10-27T14:13:02+01:00
(-3/7)x+ 26/7 = 2
(-3/7)x= (2x7)/7 - 26/7
(-3/7)x= 14/7-26/7
(-3/7)x= -12/7
X= (-12/7) / (-3/7)
X= (-12/7) x (7/ -3)
X= 84/21