Ответ:
-2.5
5y³-6y-1-2y-5y³= 19
-8y=20
y=20÷(-8)
y=-2.5
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Ответ:
-2.5
5y³-6y-1-2y-5y³= 19
-8y=20
y=20÷(-8)
y=-2.5