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OpenStudy (anonymous):
if a number is added to twice the number, the result is -12. what is the number
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OpenStudy (anonymous):
x + 2x=-12 3x=-12 x=-4
OpenStudy (saifoo.khan):
x + 2x = -12 Solve.
OpenStudy (anonymous):
x+2x= -12 3x =-12 x= -12/3 x=-4
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