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x/3+y/2=5 /*2
-3/2x - y = -15
2/3x +y = 10
----------------- +
(2/3-3/2)x = -5
(4/6-9/6)x = -5
-5/6x = -5 /:(-5/6)
x=5*6/5
x=6
6/2 +y/3=5
y/3=5-3 /*3
y=2*3=6
Odp. x=6, y=6.