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March 1, 2015

March 1, 2015

Posted by **Gloria** on Wednesday, April 18, 2012 at 6:29pm.

- algebra -
**PsyDAG**, Saturday, April 21, 2012 at 2:47pmD + 6 = B

4(D-13) = B-13

Substitute D+6 for B in second equation and solve for D. Insert that value into the first equation and solve for B. Check by inserting both values into the second equation.

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