<p>I seem to have forgotten entirely how to solve fractions when they exist in the denominator. Any math wizzes care to help?</p>
<p>For example,</p>
<p>(1/a-1/b)/(1/a^2-1/b^2)</p>
<p>change it to the multiplication of its reciprocate, so, it would be (1/a-1/b)(a^2-b^2)</p>