To solve this equation, we will first simplify both sides of the equation by multiplying by the denominators to get rid of the fractions.

3/7х + 2/5 = 3/5 * (5/7х + 2/3)

Multiplying both sides by 35 (the product of the denominators):

35 (3/7х) + 35 (2/5) = 35 (3/5) (5/7х + 2/3)

Simplifying:

15х + 14 = 21 * (5х/7 + 10/3)

15х + 14 = 15х + 70

Subtracting 15х from both sides:

14 = 70

This equation is a contradiction, which means that there is no solution.