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Anettt [7]
4 years ago
12

What is the answer to the system?​

Mathematics
1 answer:
omeli [17]4 years ago
6 0

\begin{cases}x + y  = 40 \\  \frac{x}{20} +  \frac{y}{4}   = 6\end{cases} \\ \Leftrightarrow \begin{cases} x + y = 40\\x + 5y = 120 \end{cases} \\ \Leftrightarrow \begin{cases} x + y = 40\\ 4y = 80\end{cases} \\ \Leftrightarrow \begin{cases}x  = 20 \\ y = 20\end{cases}

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