Question 618678
{{{c+3d=8}}}
{{{c = 8 - 3d}}}
{{{c=4d-6}}}
{{{8-3d = 4d - 6}}}
{{{8+6 = 4d + 3d}}}
{{{14 = 7d}}}
{{{d = 2}}}
If d=2, then {{{c = 8 - (3*2)}}} so c = 2 as well
The solution is the point (2,2)