Question 656723

if {{{f(x)=5/x+2}}} and you need to find {{{f(m-2) }}} means you are given 
{{{x=m-2}}}; so, go to

 {{{f(x)=5/x+2}}}...replace {{{x}}} with {{{m-2}}}


{{{f(m-2)=5/(m-2)+2}}}

{{{f(m-2)=5/(m-2)+2(m-2)/(m-2)}}}

{{{f(m-2)=(5+2(m-2))/(m-2)}}}

{{{f(m-2)=(5+2m-4)/(m-2)}}}

{{{f(m-2)=(2m+1)/(m-2)}}}