Daniell123 Daniell123

29-09-2014
Mathematics

Answered

What does n equal to in 12n + 9 = 6 - 3n

Answer :

29-09-2014

[tex]12n+9=6-3n\ \ \ \ \ \ |Add\ 3n\ to\ each\ side\\\\ 15n+9=6\ \ \ \ \ |Subtract\ 9\\\\ 15n=-3\ \ \ \ \ |Divide\ by\ -15\\\\ n=-\frac{3}{15}=\boxed{-\frac{1}{5}}[/tex]

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