SOLUTION: If {{{(3/7)+(7/12)=(1/N)}}}, what is the value of N?

Algebra ->  Equations -> SOLUTION: If {{{(3/7)+(7/12)=(1/N)}}}, what is the value of N?      Log On


   

Question 1197326: If %283%2F7%29%2B%287%2F12%29=%281%2FN%29, what is the value of N?
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

%283%2F7%29%2B%287%2F12%29=%281%2FN%29

%283%2A12%29%2F%287%2A12%29%2B%287%2A7%29%2F%2812%2A7%29=%281%2FN%29
36%2F84%2B49%2F84=%281%2FN%29
85%2F84=%281%2FN%29................cross multiply
85N=1%2A84
N=84%2F85