Given that x, y, Z, a are natural numbers, and X 〈 y 〈 Z, find 1 / x + 1 / y + 1 / z = a, find the value of X, y, Z

Given that x, y, Z, a are natural numbers, and X 〈 y 〈 Z, find 1 / x + 1 / y + 1 / z = a, find the value of X, y, Z

Because x, y, Z, a are natural numbers, so 1 / x + 1 / y + 1 / Z