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Mathematics, 26.09.2019 20:10 Alysssssssssssa

1. find each sum.
a. (-4) + (-12) =
b. 9+5 =
c. 13+(-5) =
d. (-12) + 9 =

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1. find each sum.
a. (-4) + (-12) =
b. 9+5 =
c. 13+(-5) =
d. (-12) + 9 =...

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