SOLUTION: I don't know how to explain to my child how to get this. {{{(c-5)/4}}}{{{""=""}}}{{{3}}}

When you do the same thing to both sides of an equation,
you get another equivalent equation.

So let's multiply both sides of the equation by 



Now the 's will cancel out on the left and the right side becomes  because it's 



So all that's left is



When you do the same thing to both sides of an equation,
you get another equation.

This time let's add 5 to both sides of the equation:



Now the  and the  cancel out on the left,
and the right becomes  because ut's 



So all that's left is



and that is the answer.  Now we can check to make sure it's right.

Start with the original:



Susbtitute  for 



We put  in place of the 



Now we divide the  by the , and we get



And since the numbers on both sides of the equal sign
are the same, we know we did it correctly, and the
answer is .

Edwin