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7:20::x:10

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Answer to a math question 7:20::x:10

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$70=20x$

$20x=70$

$\begin{align*}&x=\frac{ 7 }{ 2 } \\&\begin{array} { l }x=3 \frac{ 1 }{ 2 },& x=3.5\end{array}\end{align*}$

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