Question 878379
x=-3/2y +7 & x=4y - 6
convert to  a matrix
x=-3/2y +7 
x+3/2y=7
1,3/2,7
 x=4y - 6
x-4y=-6



1,-4,-6
1,3/2,7
add  down (-1/1) *row 1 to row 2
1,-4,-6
0,11/2,13
divide row 2 by 11/2
1,-4,-6
0,1,26/11
add  up  (4/1) *row 2 to row 1
1,0,38/11
0,1,26/11