<p>how do you do this problem x^-y=1/8 and y^z=243 what is x+z</p>
<p>x^-y=1/x^y=1/8 so x is 2 and y is 3. </p>
<p>3^z=243 z=5</p>
<p>x+z=2+5=7</p>
<p>so was the answer 1/54 or 1/108</p>
<p>1/54
10 char</p>
<p>was that question an experimental? why do i not remember it at alll</p>