Question 8467
{{{(2/5)x = -10}}} is the same thing as {{{(2x)/5 = -10}}}.

First, multiply both sides by 5, to give
{{{(5*2x)/5 = -10*5}}}


the lefthand side...the 5's cancel: this was the point:


{{{2x = -50}}}


Now divide both side by 2, to give
{{{(2x)/2 = -50/2}}}


hence x = -25


jon.