![](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)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{3600-75}{8400-175}=\frac{75.48-75}{175.48-175}=\frac{75.\left(48-1\right)}{175.\left(48-1\right)}\)
\(=\frac{75}{175}=\frac{25.3}{25.7}=\frac{3}{7}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
Chỉ còn cách này nữa thôi
\(\frac{3600-75}{8400-175}=\frac{75.48-75}{175.48-175}\)
\(=\frac{75.\left(48-1\right)}{175.\left(48-1\right)}\)
\(=\frac{75}{175}=\frac{3}{7}\)
\(\frac{3600-75}{8400-175}=\frac{3525}{8225}\)
\(=\frac{3}{7}\)
Chúc bạn học tốt nha!
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{18.2+9}{27}=\frac{9.2.2+9}{3.9}=\frac{9\left(2.2+1\right)}{3.9}\)
\(\Rightarrow\frac{2.2+1}{3}=\frac{5}{3}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
dấu mũ ngược đời v
\(\frac{9^{14}.25^5.8^7}{18^{12}.625^3.24^3}\)
=\(\frac{3.2^3}{5^2}\)=24/25
![](https://rs.olm.vn/images/avt/0.png?1311)
a, 35=5x7 => a/35 rút gọn được khi và chỉ khi a=5 hoặc a=7
Mặt khác 5 và 7 đều là số nguyên tố => a {5, 7}
b, a=7
Chúc bạn học tốt!!!
![](https://rs.olm.vn/images/avt/0.png?1311)
Rút gọn
A, \(\dfrac{125}{1000}\)
\(\dfrac{125}{1000}=\dfrac{125:125}{1000:125}=\dfrac{1}{8}\)
B, \(\dfrac{3600-75}{4800-175}\)
\(\dfrac{3600-75}{4800-175}=\dfrac{3525}{4625}\)
\(\Rightarrow\dfrac{3525}{4625}=\dfrac{3525:25}{4625:25}=\dfrac{141}{185}\)
C, \(\dfrac{3^{10}.\left(-5\right)^{21}}{\left(-5\right)^{20}.3^{12}}\)
\(\dfrac{3^{10}.\left(-5\right)^{21}}{\left(-5\right)^{20}.3^{12}}=\dfrac{3^{10}.\left(-5\right)^{20}.\left(-5\right)}{\left(-5\right)^{20}.3^{10}.3^2}=\dfrac{\left(-5\right)}{3^2}=\dfrac{-5}{9}\)
\(\frac{44116-14}{10290-35}=\frac{44102}{10255}\)
\(\frac{3600-75}{8400-175}=\frac{75\left(48-1\right)}{35\left(240-5\right)}=\frac{15\cdot47}{7\cdot235}=\frac{3\cdot5\cdot47}{7\cdot5\cdot47}=\frac{3}{7}\)
g, \(\frac{44116-14}{10290-35}=\frac{44102}{10255}\)
h, \(\frac{3600-75}{8400-175}=\frac{3525}{8225}=\frac{3}{7}\)