Part E $-$ Solving for Two Variables

Now that you have one of the two variables in Part D isolated, use substitution to solve for the two variables. You may want to review the Multiplication and Division of Fractions and Simplifying an Expression Primers.

Enter the answer as two numbers $($either fraction or decimal$),$ separated by a comma, with $C$ first.

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Hint $1.$ Solving first for $D$

$C,D=$

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