gabungan eliminasi dan subtitusi 5x-2y-4=0 x+2y-1=0

5x - 2y - 4 = 0 , >> 5x - 2y = 4
x + 2y - 1 = 0 , >> x + 2y = 1

Eliminasi
5x - 2y = 4 x 1
x + 2y = 1 x 5
--------------- -
5x - 2y = 4
5x + 10y = 5
------------------ -
12y = 1
y = 1/12

Subsitusi :
x - 2y = 1
x - 1/6 = 1
x = 7/6