Răspuns :
5 ( x - 1 ) + 3 - 4 = 3 x + 11
5 x - 5 + 3 - 4 = 3 x + 11
5 x - 2 - 4 = 3 x + 11
5 x - 6 = 3 x + 11
5 x - 3 x = 11 + 6
2 x = 17 | : 2
x = 8, 5
5 ( x - 1 ) + 3 - 4 = 3 x + 11
5 x - 5 + 3 - 4 = 3 x + 11
5 x - 2 - 4 = 3 x + 11
5 x - 6 = 3 x + 11
5 x - 3 x = 11 + 6
2 x = 17 | : 2
x = 8, 5