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3x+2y = 12 3x+2y=12
x + y = 5 3x+3y=15
----------------- eliminasi -------------------- -
-y=-3
y=3
subsitusi kan ke salah satu pertidaksamaan 3x+2y=12 atau x+y=5
y=3 maka x+y=5
x+3=5
x = 5-3
x = 2
X=2, Y=3 maka, Nilai max 6x+2y=6(2)+2(3)=12+6=18
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