Question 980600
{{{x}}}= the number
{{{1/x}}}= the reciprocal of the number
{{{2*(1/x)=2/x}}}= twice the reciprocal of the number
The equation is
{{{5/7+2/x=1}}}
Multiplying both sides times {{{7x}}} ,
{{{7x(5/7+2/x)=7x}}}
{{{7x(5/7)+7x(2/x)=7x}}}
{{{7x(5/7)+7x(2/x)=7x}}}
{{{5x+14=7x}}}
{{{14=7x-5x}}}
{{{14=2x}}}
{{{14/2=x}}}
{{{7=x}}}