5/12 -7/32 :21/16
\(=\frac{5}{12}-\frac{1}{6}\)
\(=\frac{1}{4}\)
5/12 - 7/32 : 21/16 = 5/12 - 112/672
= 280/672 - 112/672
= 168/672 = 1/4
5/12 -7/32 :21/16
$=\frac{5}{12}-\frac{1}{6}$
$=\frac{1}{4}$
chuc mung ban da tinh dung cau nay mk biet lau roi nhung cho cac ban kx