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-x+5y=4 dikali 3 -3x+15y=12 dijumlahkan menjadi
13y= 13 y=13/13 y=1
3x-2y=1
3x-(2x1)=1
3x-2=1
3x=1+2
3x=3
x= 3/3
x=1
jadi x=1 y=1
-x = 4-5y
x = 5y-4
3x-2y=1
3(5y-4) - 2y = 1
15y - 12 - 2y =1
13y = 1+12
13y=13
y = 1
3x-2y = 1
3x-2(1) = 1
3x-2 =1
3x =1+2
3x=3
x=1