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01-09-2015
Mathematics

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fifteen more than half a number is 9?

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01-09-2015

That in algebraic form would be [tex]\frac{1}{2}n + 15 = 9[/tex]

Subtract 15 to both sids and you get
[tex] \frac{1}{2}n = -6[/tex]

Multiply 2 on both sides and you get
n = -12

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