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Mathematics 6 Online
OpenStudy (anonymous):

simplify n-4-9

hartnn (hartnn):

n-4-9 = n- (4+9) so whats 4+9= ?

OpenStudy (anonymous):

Add 9 and 4, subtract from n.

hartnn (hartnn):

so did u get n-13 ?

OpenStudy (anonymous):

yea

hartnn (hartnn):

then its correct :)

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