$\frac{18}{117}\times\frac{12}{113}+\frac{12}{113}\times\frac{8}{117}+\frac{26}{117}+\frac{101}{113}$
$=\frac{12}{113}\times\left(\frac{18}{117}+\frac{8}{117}\right)+\frac{26}{117}+\frac{101}{113}$
$=\frac{12}{113}\times\frac{26}{117}+\frac{26}{117}+\frac{101}{113}$
$=\frac{26}{117}\times\left(\frac{12}{113}+1\right)+\frac{101}{113}$
$=\frac{26}{117}\times \frac{125}{113}+\frac{101}{113}$
$=\frac{250}{1017}+\frac{101}{113}=\frac{1159}{1017}$
\(\dfrac{18}{117}\times\dfrac{12}{113}+\dfrac{12}{113}\times\dfrac{8}{177}+\dfrac{26}{117}\times\dfrac{101}{113}\)
\(=\left(\dfrac{18}{177}+\dfrac{8}{177}\right)\times\dfrac{12}{113}+\dfrac{26}{117}\times\dfrac{101}{113}\)
\(=\dfrac{26}{177}\times\dfrac{12}{113}+\dfrac{26}{117}\times\dfrac{101}{113}\)
\(=\dfrac{26}{177}\times\left(\dfrac{12}{113}+\dfrac{101}{113}\right)\)
\(=\dfrac{26}{177}\times1\)
\(=\dfrac{26}{117}\)
Sửa đề.`18/117 × 12/113 + 12/113 × 8/117 + 26/117 × 101/113`
`= (18/117 + 8/117) × 12/113 + 26/117 × 101/113`
`= 26/117 × 12/113 + 26/117 × 101/113`
`= 26/117 × (12/113 + 101/113)`
`= 26/117 × 1`
`= 26/117`
