Find the value of (y)

Dear student

-77y-9-8-y+7-y+6=2-y2-1+7y-12-49y+72+9y-7y+42=2-y-22+72y-12-47y+114=-y-2+14y-72-47y+114=-2y-4+14y-722×-47y+114=12y-11-94y+228=12y-11-94y-12y=-11-228-106y=-239y=239106
Regards

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ejdj
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