rozwiąż układ równań: 2y=3x 3x+y=27
2y=3x
3x+y=27
-y=-1,5x
-----------+
4,5x=27
x=6
y=1,5·6
y=9
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2y=3x
3x+y=27
-y=-1,5x
3x+y=27
-----------+
4,5x=27
x=6
x=6
y=1,5·6
x=6
y=9