Question 1000307

if you have

{{{log(4, (4)) + log(6, (7x))+1=4}}}, then

{{{log( (4))/log(4) + log((7x))/log(6)=4-1}}}


{{{1 + log((7x))/log(6)=3}}}

{{{log(6) + log((7x))=3log(6)}}}

{{{log(6(7x))=log(6^3)}}}....if log same, than

{{{6(7x)=6^3}}}

{{{42x=216}}}

{{{x=216/42}}}

{{{x=36/7}}}=> exact solution

{{{x=5.14}}}-> approximate solution


{{{ graph( 600, 600, -10, 10, -10, 10, log(4, (4)) + log(6, (7x))+1,4) }}}