Question 832786
The equation of a plane is {{{qx+ry+sz=t}}}
Use the three points,
{{{3q=t}}}
{{{8r=t}}}
{{{6s=t}}}
You can choose {{{t}}} to be any non-zero value and then solve for {{{q}}},{{{r}}}, and {{{s}}}.
To make it easier let {{{t=3*8*6=144}}}.
{{{3q=144}}}
{{{q=48}}}
{{{8r=144}}}
{{{r=18}}}
{{{6s=144}}}
{{{s=24}}}
So then,
{{{48x+18y+24z=144}}}
{{{highlight(8x+3y+4z=24)}}}