Solution: In Exercises 3146, solve the system by the method of elimination and check any

Chapter 8, Problem 43

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Solving a System by Elimination   In Exercises 31–46, solve the system by the method of elimination and check any solutions using a graphing utility.

\(\left\{\begin{aligned} 0.2 x-0.5 y &=-27.8 \\ 0.3 x+0.4 y &=~~~68.7\end{aligned}\right.\)

Text Transcription:

{0.2x-0.5y=-27.8 _0.3 x+0.4y=68.7

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