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Mathematics 23 Online
OpenStudy (anonymous):

-2z - ry = r + 7 solve for r

OpenStudy (kewlgeek555):

I believe...\[r=\frac{ 2z+7 }{ y+1 }\]But just in case, I will call @jigglypuff314 @ganeshie8 @agent0smith for you. :)

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