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Mathematics 21 Online
OpenStudy (anonymous):

Please help with algebra problem

OpenStudy (anonymous):

OpenStudy (midhun.madhu1987):

Put the values of i from 2 to 7 and find their sum

OpenStudy (anonymous):

add \[3\times 2-15+3\times 3-15+3\times 4-15+3\times 5-15+3\times 6-15+3\times 7-15\] is one way grind it til you find it

OpenStudy (midhun.madhu1987):

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