d. 37/53 x 535353/373737 x 23/48 x 242424/232323
= 1 x 1/2
= 1/2
37/53.23/48.535353/373737.242424/232323
=37/53.23/48.53/37.24/23
=37.23.53.24/53.48.37.23
=24/48
=1/2
= 37/53 x 23/48 x 53/37 x 24/23
= .....
= 24/18
Nếu rút gọn thì sẽ ra : 1/2
c, \(\frac{1}{24}\times3=\frac{1\times3}{24}=\frac{3}{24}=\frac{1}{8}\)
\(\frac{2}{5}+1\times3=\frac{2}{5}+3=\frac{2}{5}+\frac{15}{5}=\frac{17}{5}\)
\(\frac{7}{9}+\frac{10}{11}=\frac{77}{99}+\frac{90}{99}=\frac{167}{99}\)
d, \(\frac{37}{53}\times\frac{23}{48}\times\frac{535353}{373737}\times\frac{242424}{232323}=\frac{37}{53}\times\frac{23}{48}\times\frac{53}{37}\times\frac{24}{23}\)
\(=\) \(\frac{37\times23\times53\times24}{53\times48\times37\times23}\)
\(=\frac{24}{48}=2\)
