A and B are reciprocal to each other, a / B / 2 = ()
A and B are reciprocal to each other, and a / b = 3 / 2 helps each other
9 / b △ 3 / 2 times 4 / a (A and B are reciprocal, what is the result?)
One third of the sum of two times the reciprocal of a and B is