Question

Me ajudem pfffvvvv!!

Answer 1

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$( - \frac{21}{8} )( \frac{20}{14} ) \\ \\ =\frac{ - 21 \times 20}{8 \times 14} \\ \\ = \frac{ - 420}{112} \\ \\ = \frac{ - 210}{56} = > \frac{-105}{28} = > \frac{ - 15}{4}$

A resposta é -15/4

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Att: MarcosPCV