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OpenStudy (anonymous):
(-15)(___) = 30
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OpenStudy (anonymous):
15*2=30 -15*-2=30
OpenStudy (anonymous):
Alright you have to divide 30 by -15 to get the number that you want. |dw:1369918299360:dw| Then you get -2 as your missing number! Sorry for the horrible drawing xD
OpenStudy (anonymous):
neg*neg=pos pos*pos=pos
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