Kelly tells you that when variables are in the denominator, the equation becomes unsolvable. "there is a value for x that makes the denominator zero, and you can't divide by zero," kelly explains. using complete sentences, demonstrate to kelly how the equation is still solvable.

Let's try to solve the equation: 1/x + 1/(x)² = 2
Kelly says that it is not possible because there are the variable x and x² in the denominators. Kelly is correct in that there is a value of x that makes the denominator zero. In this case, x = 0 makes the denominator of 1/x zero and also makes the denominator of 1/x² = 0. 
But, we want to look for values of x that will make the whole equation true, not the values of x that make the denominators zero. 1/x + 1/(x)² = 2

(x +1)/(x)² = 2 

Multiply through by x² with the proviso that x is not 0. 

Then, (x + 1) = 2x²

At this point, we are looking for solutions to (x + 1) = 2x² which is related to but not identical to the original equation. So, we will have to check any answers we get to (x + 1) = 2x² against the original problem: 1/x + 1/(x)² = 2

The amount used= 13.04- 1.9 = 11.14