a) \(\dfrac{-5}{14}\) và \(\dfrac{30}{-84}\)
Ta có: \(\dfrac{{30}}{{ - 84}} = \dfrac{{30:(-6)}}{{ - 84:(-6)}} = \dfrac{-5}{{ 14}};\)
Vậy: \(\dfrac{-5}{14}\) = \(\dfrac{30}{-84}\)
b)\(\dfrac{-6}{102}\) và \(\dfrac{-9}{153}\)
Ta có:
\(\begin{array}{l} \dfrac{{ - 6}}{{102}} = \dfrac{{ - 6:6}}{{102:6}} = \dfrac{{ - 1}}{{17}};\\ \dfrac{{ - 9}}{{153}} = \dfrac{{ - 9:9}}{{153:9}} = \dfrac{{ - 1}}{{17}} \end{array}\)
Vậy: \(\dfrac{-6}{102}\) = \(\dfrac{-9}{153}\)
