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Pre-Algebra 17 Online
OpenStudy (anonymous):

-47+(-21)

OpenStudy (anonymous):

-68

OpenStudy (anonymous):

We just need ti subtract... -68

OpenStudy (anonymous):

(-47)+(-21)= -68

jimthompson5910 (jim_thompson5910):

Add up the numbers without the negative signs 47+21 = 68 then make the result negative to get -68 so that's why -47 + (-21) = -68

OpenStudy (anonymous):

but there both negative doesn't that make them positive

jimthompson5910 (jim_thompson5910):

that only works if you multiply two negative numbers eg: -5 times -3 = +15

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