bjr
(5/2)x - 8 = -2x + 10
(5/2)x + 2x = 8 + 10
(5/2)x + (4/2)x =18 (dénominateur commun 2)
(9/2)x = 18
x = 18 / (9/2)
x = 18*(2/9)
x = (18*2) / 9 (simplification par 9)
x = 4
on peut vérifier
(5/2)*4 - 8 = 10 - 8 = 2
-2*(4) + 10 = -8 + 10 = 2
Solution : 4
