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28y ! ⭐️ gotcha! Just think about that
y=5 , because first you subtract 3y from -7y and got -10y then added 8y cause you're moving it to the side then you'll get -2y and on the other side you'll have -8 add 2 cause your moving the 2 from the other side  -10/-2 will give you positive 5 
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