Question 636528
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
-3x-2y+3z= -1                0r {{{z = (3x+2y - 1)/3}}})
<u> 2x+5y-3z= -6</u>
  -x+ 3y = -7                0r {{{x = 3y+ 7}}}
 
  4x+3y+3z= 22 
<u> 2x+5y-3z = -6</u>
    6x + 8y = 16

  -x+ 3y = -7         |multiplying 1st EQ by 6 and adding to 2nd EQ to eliminate x 
<u>6x+ 8y = 16</u>
      26y = -26
        y = -1  and x = 4  and z = 3