nicoleoynt1m nicoleoynt1m
  • 01-02-2018
  • Mathematics
contestada

6n+9=-3n−21−6
solve for n

please show steps :)

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texaschic101
texaschic101 texaschic101
  • 01-02-2018
6n + 9 = -3n - 21 - 6.....simplify the right hand side
6n + 9 = -3n - 27 ....add 3n to both sides
6n + 9 + 3n = -3n + 3n - 27....simplify
9n + 9 = -27....subtract 9 from both sides
9n + 9 - 9 = -27 - 9...simplify
9n = - 36.....divide both sides by 9
(9/9)n = -36/9....simplify
1n or just n = - 4
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