Question 940055
y=3x-6
y=-7x-1
  3x-6 =-7x-1 
     add 7x on both sides
  3x-6+7x =-7x-1+7x
   10x-6 =-1
 add  6 on both sides
  10x-6+6 =-1+6
  10x= 5
 divide with 10 on both sides
{{{ 10x/10 =5/10}}}
    {{{ x= 1/2}}}
  y  = 3x-6
    = {{{3*(1/2)-6}}}
   ={{{ (3/2) -6}}}
  ={{{(3/2)-12/2}}}
 ={{{ (3-12)/2}}}
 ={{{-9/2}}}
   Result: x= 1/2   y =-9/2