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Mathematics 7 Online
OpenStudy (anonymous):

See picture below

OpenStudy (anonymous):

OpenStudy (angela210793):

12-(-9+21+2)=12-14=-2

OpenStudy (anonymous):

f(3)=2(3)+6=12 g(3)=-(3)^2+7(3)+2=14 then 12-14=-2

OpenStudy (anonymous):

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