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Mathematics 7 Online
OpenStudy (anonymous):

-7z - 7 -5z + 5

OpenStudy (saifoo.khan):

add like terms!

OpenStudy (saifoo.khan):

-7z - 7 -5z + 5 -12z -2

jimthompson5910 (jim_thompson5910):

-7z - 7 -5z + 5 (-7z-5z) - 7 + 5 -12z -2

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