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OpenStudy (anonymous):
10 decreased to 20
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OpenStudy (destinymasha):
-10
OpenStudy (destinymasha):
10 -20 = -10
OpenStudy (anonymous):
explain me please
OpenStudy (destinymasha):
on a number line -- if you start from 10 and go back 20 times -- you will find yourself on -10. why? because, 20 is bigger than 10!
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