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3x+2y=12 |×1| 3x+2y=12
--------------------------- -
-1x =-2 --->x=2
x+y=5
2+y=5
y =5-2=3
jadi: x=2
y=3
3x + 2y = 12 kita hilangkan xnya dengan mengalikan angka 3 pada persamaan x + y =5
3x + 3y = 15
3x + 2y = 12
---------------------------- -
y = 3
x + y = 5 (subtitusikan 3nya) x +3 =5 jadi x=2 y =3