(2y-2021)(2y-2021)+3(3y-2021)=4
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2y-2021*2y-2021+3*3y-2021=4
2y*2y*3y-2021-2021-2021+3=4
16y-6063+3=4
16y-6060=4
16y=4+6060
16y=6064
y=6064/16
y=379
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