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Mathematics 19 Online
OpenStudy (anonymous):

20 - (-14) =

OpenStudy (saifoo.khan):

34

OpenStudy (anonymous):

20+14 =34

OpenStudy (anonymous):

- and - becomes + \[20-(-14) = 20+14 = 34\]

OpenStudy (anonymous):

34

OpenStudy (anonymous):

I learned this rule as "Thump Thump" because you see two snakes on the road " - - " and you hit them with your car and... "Thump Thump" you smear their insides making them look like ++

OpenStudy (anonymous):

Those were the days :)

OpenStudy (anonymous):

wow shoshny nice method r u on facebook ?

OpenStudy (anonymous):

yup :) http://www.facebook.com/profile.php?id=100000172000179

OpenStudy (anonymous):

thanks

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