[2/11:35/121} nhân với 7/2
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![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) \(\frac{5}{12}-\frac{3}{-16}+\frac{3}{4}\)
\(=\frac{5}{12}-\left(-\frac{3}{16}\right)+\frac{3}{4}\)
\(=\frac{5}{12}+\frac{3}{6}+\frac{3}{4}\)
\(=\frac{20+9+36}{48}\)
\(=\frac{65}{48}\)
Mấy câu kia lát làm :))
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
a: \(=\dfrac{1}{3}\cdot\dfrac{1}{3}\cdot\dfrac{-17}{18}\cdot\dfrac{14}{17}=\dfrac{-14}{18\cdot9}=\dfrac{-14}{162}=\dfrac{-7}{81}\)
b: \(=\dfrac{12}{4}+\dfrac{35}{11}\cdot\dfrac{121}{245}=3+\dfrac{11}{7}=\dfrac{32}{7}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a: \(=\dfrac{15}{135}\cdot\dfrac{-17}{18}\cdot\dfrac{14}{17}=\dfrac{1}{9}\cdot\dfrac{-7}{9}=\dfrac{-7}{81}\)
b: \(=3+\dfrac{35}{11}\cdot\dfrac{121}{245}=3+\dfrac{11}{7}=\dfrac{32}{7}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
3/11-121/35:3/7
=3/11-121/15
=-1286/165
chúc bạn học tốt !!!
\(\frac{3}{11}-\frac{121}{35}:\frac{3}{7}\)
\(=\frac{3}{11}-\frac{121}{15}\)
\(=-\frac{1286}{165}\)
Hok Tốt !
# mui #
![](https://rs.olm.vn/images/avt/0.png?1311)
\(1)\frac{12}{7}\times \frac{7}{4}+\frac{35}{11}:\frac{245}{121}\)
\(=3+\frac{35}{11}\times \frac{121}{245}\)
\(=3+\frac{11}{7}\)
\(= 3\frac{1}{7}(=\frac{22}{7})\)
bằng 11/5 nhé bạn
=11/5