Question 866335
Since {{{y = 2x - 6}}}

{{{4x + 3y = 12}}} could be rewritten as:
{{{4x + 3(2x - 6) = 12}}}
{{{4x + 6x - 18 = 12}}}
{{{10x =30}}}
{{{x=3}}}

And,
{{{y = 2(3) - 6}}}
{{{y=0}}}


HOPE THAT HELPS!