![](https://rs.olm.vn/images/avt/0.png?1311)
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{99}{72}-\frac{15}{40}-\frac{1212}{1616}\)= \(\frac{11}{8}-\frac{3}{8}-\frac{6}{8}\)
=\(\frac{11-3-6}{8}\)
=\(\frac{2}{8}=\frac{1}{4}\)
Ai thấy đúng thì k nha
Yêu các bạn nhiều
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
a: 78/42-4/7=13/7-4/7=9/7
100/110-56/88=10/11-7/11=3/11
75/35-11/7+21/49=15/7-11/7+3/7=7/7=1
99/72-15/40-1212/1616=11/8-3/8-3/4=1-3/4=1/4
![](https://rs.olm.vn/images/avt/0.png?1311)
\(1-\dfrac{1212}{1616}\)
\(=1-\dfrac{3}{4}\)
\(=\dfrac{4}{4}-\dfrac{3}{4}\)
\(=\dfrac{1}{4}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\dfrac{360}{360}-\dfrac{1212}{1616}=1-\dfrac{3}{4}=\dfrac{4}{4}-\dfrac{3}{4}=\dfrac{1}{4}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) \(\frac{6}{9}=\frac{6:3}{9:3}=\frac{2}{3}\)
b)\(\frac{10}{48}=\frac{10:2}{48:2}=\frac{5}{24}\)
c)\(\frac{72}{84}=\frac{72:12}{84:12}=\frac{6}{7}\)
d)\(\frac{1212}{3939}=\frac{1212:303}{3939:303}=\frac{4}{13}\)
#H
Rút gọn phân số:
\(\frac{6}{9}=\frac{6\div3}{9\div3}=\frac{2}{3}\)
\(\frac{10}{48}=\frac{10\div2}{48\div2}=\frac{5}{24}\)
\(\frac{72}{84}=\frac{72\div12}{84\div12}=\frac{6}{7}\)
\(\frac{1212}{3939}=\frac{1212\div303}{3939\div303}=\frac{4}{13}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{72}{84}\)=\(\frac{6}{7}\)
\(\frac{1212}{3939}\)=\(\frac{4}{13}\)
trả lời:
\(\frac{72}{84}=\frac{18}{21}=\frac{6}{7}\)
\(\frac{1212}{3939}=\frac{1212:101}{3939:101}=\frac{12}{39}=\frac{4}{13}\)
học tốt
\(=\dfrac{11}{8}-\dfrac{3}{8}-\dfrac{3}{4}=1-\dfrac{3}{4}=\dfrac{1}{4}\)
=11/8−3/8−3/4=1−3/4=1/4