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Mathematics 13 Online
OpenStudy (salina):

http://imageshack.us/photo/my-images/824/page679.jpg/ I need help number 11 please!

OpenStudy (anonymous):

\[\sum_{k=3}^{15}( 14 - 2k )\]

OpenStudy (anonymous):

\[\sum_{k=3}^{15} 14 - \sum_{k=3}^{15} 2k\]

OpenStudy (salina):

How you find the sum?

OpenStudy (anonymous):

This will bring us \[14( 13) - 2(3 + 4+5+6...+15)\]

OpenStudy (anonymous):

-52

OpenStudy (salina):

I don't gget it can you show me step by step. Please. Thank

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