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Elizabeth7838 Elizabeth7838
  • 23-04-2014
  • Mathematics
Answered

What is the solution of the system of equations c+3d=8 and c=4d-6?

Show work plz.

Verified Answer :

Anonymous Anonymous
  • 26-04-2014

\(\left\{\begin{array}{ccc}c+3d=8\\c=4d-6\end{array}\right\\\\substitute:\\\\(4d-6)+3d=8\\4d+3d-6=8\ \ \ \ /+6\\7d=14\ \ \ \ /:7\\d=2\\\\c=4\cdot2-6=8-6=2\\\\\left\{\begin{array}{ccc}c=2\\d=2\end{array}\right\)

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