Question

12/11 x 36/144 x 121/72
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Answer 1

Lời giải:
$\frac{12}{11}\times \frac{36}{144}\times \frac{121}{72}$

$=\frac{12}{11}\times \frac{1}{4}\times \frac{11\times 11}{12\times 6}$

$=\frac{12}{11}\times \frac{11}{12}\times \frac{11}{6}\times \frac{1}{4}$

$=\frac{11}{6}\times \frac{1}{4}=\frac{11}{24}$