If 3t-7=5t, then 6t=?

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asked May 5, 2015 220k views

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If 3t-7=5t, then 6t=?

Mathematics
high-school

Oba asked

by Oba

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$3t-7=5t\\ 2t=-7\\ 6t=-21$

Alex Neigher answered May 6, 2015

by Alex Neigher

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$3t-7=5t\\\\5t=3t-7\ \ \ \ /-3t\\\\5t-3t=3t-3t-7\\\\2t=-7\ \ \ \ /\cdot3\\\\2t\cdot3=-7\cdot3\\\\6t=-21$

Melih Sevim answered May 9, 2015

by Melih Sevim

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