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Help me solve please​

Help me solve please​-example-1

1 Answer

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\bf \cfrac{~~-(3)/(7)~~}{(9)/(4)}\implies -\cfrac{~~\begin{matrix} 3 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}{7}\cdot \cfrac{4}{\underset{3}{~~\begin{matrix} 9 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}}\implies -\cfrac{4}{21}

User George Pant
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