[Jew]

ข้อความเดิมเขียนโดยคุณ banker

$\frac{AO}{OD} = \frac{AF}{FB} + \frac{AE}{EC}$

$\frac{11}{OD} = \frac{2}{3} + \frac{1}{4}$

$\frac{11}{OD} = \frac{11}{12}$


$OD = 12$

$AD = 11+ 12 = 23$

ทำไม$\frac{AO}{OD} = \frac{AF}{FB} + \frac{AE}{EC}$ครับ