Dear sir,In 9.1 exercise question no. 1 and 2. Instead of finding the value of x and substituting to find the value. We can directly substitute x and y value of ratio and evaluate. Is this method wrong?
Dear sir,
In 9.1 exercise question no. 1 and 2. Instead of finding the value of x and substituting to find the value. We can directly substitute x and y value of ratio and evaluate. Is this method wrong?