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I am doing this problem in my text book and I am not sure what is happing in this one step.

[tex]2y = 360 \sqrt{\pi} - \sqrt{\pi}y [/tex]

Trying to solve for y and this is what they show as the next step

[tex](2 + \sqrt{\pi})y = 360 \sqrt{\pi}[/tex]

Where does this [tex](2 + \sqrt{\pi})[/tex] come from?? where did the other y go and the [tex]-\sqrt{\pi}[/tex]???

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# Help with Text book answer

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