Question

mn giúp mình có đc ko ạ!

cảm ơn mn

--------------------------------------------------

Answer 1

Lời giải:
$=11(\frac{13}{161}+\frac{4}{203}-\frac{7}{413}):[5(\frac{13}{69}+\frac{4}{87}-\frac{7}{177})]$

$=11.\frac{3}{7}(\frac{13}{69}+\frac{4}{87}-\frac{7}{177}):[5(\frac{13}{69}+\frac{4}{87}-\frac{7}{177})]$

$=11.\frac{3}{7}:5=\frac{33}{35}$