Question 678745
Both are the same because you can go from 13/20 = x/60 to 13/x = 20/60



Here's why


13/20 = x/60


13*60 = 20x ... Cross multiply


13*60/20 = x ... Divide both sides by 20


13/20 = x/60 ... Divide both sides by 60



So this work shows us that 13/20 = x/60 and 13/x = 20/60 are equivalent (which means the solutions to both are the same)


Let's solve the first one for x


13/20 = x/60


13*60 = 20x


780 = 20x


780/20 = x


39 = x


x = 39


Then let's solve the second equation for x


13/x = 20/60 


13*60 = 20x


780 = 20x


780/20 = x


39 = x


x = 39



So either equation gives you the same correct value of x: that value is x = 39.


So on a street with 60 homes, you would expect <font color="red">39</font> homes to have a personal computer.