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OpenStudy (anonymous):
If 3 times a number is added to -9, the result equals to 12 times the number, find the number?
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OpenStudy (a_clan):
3x-9=12x x=-1
OpenStudy (anonymous):
3n-9=12n -9=9n n=-1
jhonyy9 (jhonyy9):
-9+3x=12 3x=21 x=21/3 =7 x=7
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