Add 9, multiply by -5, product was 15. What is the integer?

by nat




Inge chose an integer.

She added 9, then multiplied the sum by -5.

The product was 15. Which integer did Inge choose?

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Oct 24, 2015
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by: Alison Morrison

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Apr 09, 2011
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answer is...
by: Anonymous

Hi Inge

-5*(x+9)=15
(x+9)=15/-5
x+9=-3
x=-3-9
x=-12

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