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metode eliminasi
x-y=5
3x-y= -7
hasilnya
2x= 12
x= 6
subtitusi
x-y= 5
6-y=5
y=5-6
y=-1
2.metode eliminasi
2x+y-8=0 pindah ruas = 2x+ y= 8 (2)
x+ 2y+1=0 pindah ruas = x+2y=-1 (1)
4x+ 2y =16
x+2y=-1
hasilnya
3x=15
x= 5
subtitusi
2x+y=8
2(5) + y = 8
10 + y = 8
y= -2