Staceybraunstein Staceybraunstein

19-06-2014
Mathematics

contestada

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

Respuesta :

konrad509 konrad509

19-06-2014

[tex]3t-7=5t\\ 2t=-7\\ 6t=-21[/tex]

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Аноним Аноним

19-06-2014

[tex]3t-7=5t\\\\5t=3t-7\ \ \ \ /-3t\\\\5t-3t=3t-3t-7\\\\2t=-7\ \ \ \ /\cdot3\\\\2t\cdot3=-7\cdot3\\\\6t=-21[/tex]

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