Răspuns:
1/2 * x + 1 + x + 1 = - 3
1/2 * 2x + 2 = - 3
1/2 * 2x = - 3 - 2
1/2 * 2x = - 5
2x = 5/1 : 1/2
2x = 5/1 * 2/1
2x = 10/1 = 10
X = 5