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y : kuas
2x+3y = 101.500 · 2
x+ 2y = 53.500 · 3
------------------------
4x+6y = 203.000
3x+6y = 160.500
----------------------- -
x = 42.500
2x+3y = 101.500
2(42.500) + 3y = 101.500
85000 + 3y = 101.500
3y = 101.500 - 85000
3y = 16.500
y = 5.500
x + 2y = 42.500 + 2(5.500)
= 42.500 + 11.000
= 53.500