Question 40896
EQUATION:
{{{1/2x+1/(2+2x)=7/24}}}
{{{((2+2x)+(2x))=(7(2x+2)(2x))/24}}}
{{{2+4x=(28x+28x^2)/24}}}
{{{48+96x=28x+28x^2}}}
{{{28x^2-68x-48=0}}}
Can you solve that ? 
you should get x=3
Hence, the number is 3.
Paul.