Question 983507


{{{-13=5(1+4m)-2m}}}
{{{-13=5*1+5*4m-2m}}}
{{{-13=5+20m-2m}}}
{{{-13-5=18m}}}
{{{-18=18m}}}
{{{-18/18=m}}}
{{{-1=m}}}



{{{4x(-1+4)=12}}}
{{{4x(3)=12}}}
{{{12x=12}}}
{{{x=12/12}}}
{{{x=1}}}



{{{-2=-(n-8)}}}
{{{-2=-n+8}}}
{{{n=2+8}}}
{{{n=10}}}