Question: x + 2y = 9 2y = 9-x How does he get y alone? add 2 to both sides multiply everything on both divide

x + 2y = 9 2y = 9-x How does he get

x + 2y = 9 2y = 9-x How does he get y alone? add 2 to both sides multiply everything on both divide everything on both si subtract 2 from both sides

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