If M and N are reciprocal to each other, then M / 5 * n / 9=

If M and N are reciprocal to each other, then M / 5 * n / 9=

m=x
n=1/x
Five times m * nine times n = x / 5 * 1 / (9x) = 1 / 45

If a times b equals one, then a is the reciprocal of B, and the reciprocal of B is a

Yes, because a times b = 1, so either a and B are all 1, or a and B are reciprocal. Only in this way can a multiply B = 1 hold. Since a is the reciprocal of B, the reciprocal of B is also a

Because a × B = 1, a and B are reciprocal______ (judge right or wrong)

B = a, B = 1, B = 1, B = 1, B = 1, B = 1, B = 1, B = 1, B = 1, B = 1, B = 1, B = 1, B = 1, B = 1, B = 1, B = 1, B = 1, B = 1, B = 1, B =