Question 758532
Let {{{x}}} be the denominator.
Then, the numerator is {{{4x}}}, and the fraction is {{{4x/x}}}, which is equivalent to {{{4}}}.
{{{4x/x=2}}}
If you add {{{6}}} to both the numerator and the denominator, the resulting fraction is
{{{(4x+6)/(x+6)=2}}}

Multiplying both sides of the equal sign times {{{(x+6)}}} we get
{{{((4x+6)/(x+6))*(x+6)=2*(x+6)}}}
{{{4x+6=2(x+6)}}} 
{{{4x+6=2x+12}}}
{{{4x-2x=12-6}}}
{{{2x=6}}}
{{{x=3}}}.......denominator
{{{4x=4*3=12}}}......numerator

so, fraction is {{{12/3}}}


if {{{6}}} is added to both the numerator and denominator, we have

{{{(12+6)/(3+6)=18/8=2}}}