Question

ex 16
va roooog munlt

Answer 1

12x / 2  x∈{0,2,4,6,8}

3xy / 5  y∈{0,5}  x∈{0,1,2,...8,9}

7xy / 2 si 5  y∈{0}  x∈{0,1,2,...8,9}