<p>Please explain how </p>
<p>x=a(x+10) yields x= 10a/1-a</p>
<p>along with your thought process. I just know this has some simple method that I am overlooking.</p>
<p>Thanks in advance for your response. </p>
<p>P.S. I absolutely loathe the explanations in the Nova SAT Math bible. Can anyone recommend a Math Book with easy to understand and DETAILED explanations?</p>
<p>Well, since you’re solving for x you’re going to want to get all of the x variables onto one side. If you distribute the a on the right side, you’re left with</p>
<p>x=ax+10a</p>
<p>Now you can subtract ax from both sides</p>
<p>x-ax=10a</p>
<p>Pull out an x</p>
<p>x(1-a)=10a</p>
<p>Then divide both sides by (1-a) and you’ll have solved for x</p>
<p>x=10a/(1-a).</p>