The perimeter of the parallelogram is 40 cm. One of its sides is 7 cm larger than the other.

In a parallelogram, the opposite sides are pairwise equal and parallel, which means that the perimeter is equal to twice the sum of two different sides
Answer 7 and 13

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.