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OpenStudy (anonymous):
what is -500+20=
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OpenStudy (anonymous):
-480
OpenStudy (anonymous):
-480
OpenStudy (anonymous):
-480 heres a calculator you have to put the number then the negative sign if you need one :) http://www.calculator.net/scientific-calculator.html
OpenStudy (anonymous):
-500 + 20 = 20 - 500
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