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Mathematics 8 Online
OpenStudy (anonymous):

.

OpenStudy (pfenn1):

Let x = number of months. The number of CDs that Tom has in any given month = 30 + 1x. The number of CDs that Nita has in any given month = 18 + 5x. To calculate what month they both have the same number of CDS, set the two equations equal to one another so\[30+x=18+5x\]Rearrange and solve for x.

OpenStudy (anonymous):

three months

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