\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
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\(\textcolor{colordef}{4 \times 9}\)
\(=\)
\(\textcolor{olive}{4\times 10} - \textcolor{colorprop}{4\times 1}\)
\(=\)
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\(-\)
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