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jeruk : y
2x+5Y=60.000
4x+3y=64.000
cara eliminasi
2(2)x+5(2)y=60.000(2)
4(1)x+3(1)y=64.000(1)
4x+10y=120.000
4x+3y=64.000
y=8.000
cara subtitusi nilai y=8000, kedalam persamaan;
2x+5y=60.000
2x+5(8.000)=60.000
2x+40.000=60.000
2x=60.000-40.000
2x=20.000
x=10.000
jadi,
3x+2y=3(10.000)+2(8.000)=30.000+16.000=46.000