Question

Rút gọn các phân số \(\frac{{ - 18}}{{76}}\); \(\frac{{125}}{{ - 375}}\).

Answer 1

Ta có: \(\frac{{ - 18}}{{76}} = \frac{{ - 18:2}}{{76:2}} = \frac{{ - 9}}{{38}}\)

\(\frac{{125}}{{ - 375}} = \frac{{125:( - 125)}}{{ - 375:( - 125)}} = \frac{{ - 1}}{3}\)

Answer 2

\(-\dfrac{18}{76}=\dfrac{-9}{38};\dfrac{125}{-375}=-\dfrac{1}{3}\)