N Naldo Oct 2012 2 0 MI Oct 30, 2012 #1 Hi there, Many thanks in advance for the help. Here is the equation I am struggling to solve: 110 = 1/(1+r) x 32.1/r How I solve for "r", or perhaps find an LCD with these denominators? Thanks so much, Naldo

Hi there, Many thanks in advance for the help. Here is the equation I am struggling to solve: 110 = 1/(1+r) x 32.1/r How I solve for "r", or perhaps find an LCD with these denominators? Thanks so much, Naldo

skeeter MHF Helper Jun 2008 16,217 6,765 North Texas Oct 30, 2012 #2 110 = 1/(1+r) x 32.1/r Click to expand... assuming the "x" meant multiplication ... \(\displaystyle 110 = \frac{32.1}{r(r+1)}\) \(\displaystyle r(r+1) = \frac{32.1}{110}\) \(\displaystyle r^2 + r - \frac{32.1}{110} = 0\) recommend using the quadratic formula ...

110 = 1/(1+r) x 32.1/r Click to expand... assuming the "x" meant multiplication ... \(\displaystyle 110 = \frac{32.1}{r(r+1)}\) \(\displaystyle r(r+1) = \frac{32.1}{110}\) \(\displaystyle r^2 + r - \frac{32.1}{110} = 0\) recommend using the quadratic formula ...