Bonsoir
(x+1)/9 -(3x-2)/6 = -7/4 +3
2(x+1) /18 - 3(3x-2)/18 = -7/4 +12/4
(2x+1 -9x +6)18 = 5/4
(7x+7)/18 = 5/4
7(x+1)/18 =5/4
(x+1)/18 = (5/4)/7
(x+1)/18 = 5/28
(x+1) = (5/28)*18
x+1 = 90/28
x= 90/28 -1
x= 90/28 -28/28 = 62/28 = 31/14
