Question:
If a and b are positive integers, then the solution of the equation ax = b has to be always
(a) positive
(b) negative
(c) one
(d) zero
Solution:
(a) If $a x=b$, then $x=\frac{b}{a}$
Since, a and b are positive integers. So, $\frac{b}{a}$ is also positive integer, Hence, the solution of the given equation has to be always positive.