4.5(0,6-y)=9(1.3-y)
2,7-4,5y=11,7-9y
9y-4,5y=11,7 - 2,7
4,5y = 9
y = 2
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4.5(0,6-y)=9(1.3-y)
2,7-4,5y=11,7-9y
9y-4,5y=11,7 - 2,7
4,5y = 9
y = 2