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Mathematics 7 Online
OpenStudy (anonymous):

the math club has 57 memebers who are in 6 or 7 grade there are twice as many 6 graders as 7 graders

OpenStudy (welshfella):

I guess you need to find the number of 6th and 7th grades in the club right?

OpenStudy (anonymous):

Let's substitute x for 7th graders.

OpenStudy (anonymous):

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