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y+2x=3 3y+6x=9
2y-3x=11 4y-6x=11 +
7y=20
y=20
7
CARA SUBTITUSI
2y-3x=11
2.20-3x=11
7
40-3x=11
7
-3x=11-40
7
x=11-40/7
-3
x=-1,761904761905