Jika x+3y=6 dan 2x-y=6 maka nilai x:y=

x+3y=6
2x-y=6(dikalikan 3)

x+3y=6
6x-3y=18
7x    = 24
x= 3 3/7

x+3y=6
24/7 +3y=6
3y= 6-24/7
3y= 42/7-24/7
3y=18/7
y= 18/21

x:y= 24/7:18/21
     = 24/7×21/18
       = 4

eliminasi x
x+3y=6    lx2
2x-y=6     lx1

=2x+6y=12
  2x-y=6
------------------------------   -

5y=6
y=6/5

subtitusi nilai y ke persamaan x+3y=6
x+3(6/5)=6
x+18/5=6
x=6 x 5/18
x=5/3

x;y=5/3 ; 6/5 = 5/3 x 5/6=25/18