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Mathematics, 16.12.2021 22:20 Chewbacka2020

6+2/3b=3/4b-4 smallest common multiple of 3 and 4 is 12
72+8b=9b-48?
_-72-72_
8b=9b-120

What are my next steps and what are my mistakes?

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6+2/3b=3/4b-4 smallest common multiple of 3 and 4 is 12
72+8b=9b-48?
_-72-72_
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