Răspuns:
Explicație pas cu pas:
22.
x + 5 ≤ 17
x ≤ 17 - 5
x ≤ 12
A = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}
x = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
x + 3 = 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
5 divide 5, 10, 15
B = {2, 7. 12}
A U B = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}
A \ B = {0, 1, 3, 4, 5, 6, 8, 9, 10, 11}