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Mathematics 18 Online
OpenStudy (anonymous):

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OpenStudy (igreen):

Plug them in the formula. Area of Rectangle is \(A=lw\). \(504=(20x-48)(7)\) Solve for \(x\). Distribute 7 into the parenthesis. \(504 = 140x - 336\) Add 336 to both sides: \(840 = 140x\) Divide 140 to both sides, what's 840 / 140?

OpenStudy (igreen):

No problem.

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