Question 486708
{{{-12(x-12)=-9(1+7x)}}} divide by (-3)
{{{4(x-12)=3(1+7x)}}}
{{{4x-48=3+21x}}}
{{{4x-21x=3+48}}}
{{{-17x=51}}}
{{{x=51/(-17)}}}
{{{x=-3}}}