Răspuns :
5 * X + 27 = 2 * X + 108 | -27
5 * X = 2 * X + 81 | - 2 * X
3 * X = 81
X = 27
P.S.: "*" inseamna "ori"
5 * X = 2 * X + 81 | - 2 * X
3 * X = 81
X = 27
P.S.: "*" inseamna "ori"