SAT, 07.10.2021 18:20 4804393909
find the ordered pair $(x, y)$ that satisfies the system of equations \begin{align*} 2x + y &=-7,\\ x &=4+2y. \end{align*}
Answers: 1
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Did the universe cool off or get hotter as it expanded after the 'big bang"?
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find the ordered pair $(x, y)$ that satisfies the system of equations \begin{align*} 2x + y &=-7...
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