Trả lời:
$\frac{15}{17}$ × $\frac{15}{33}$ - $\frac{15}{17}$ × $\frac{12}{33}$
= $\frac{15}{17}$ × ($\frac{15}{33}$ - $\frac{12}{33}$)
= $\frac{15}{17}$ × $\frac{3}{33}$
= $\frac{15}{17}$ × $\frac{1}{11}$
= $\frac{15}{187}$
Vậy $\frac{15}{17}$ × $\frac{15}{33}$ - $\frac{15}{17}$ × $\frac{12}{33}$ = $\frac{15}{187}$
~잘 공부하세요~
@su
$\text{#BTS}$
