34/51=.......?
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\(85\left(-51\right)+34\left(-51\right)-19\left(-51\right)\)
\(=\left(-51\right)\left(85+34-19\right)\)
\(=-51\cdot100=-5100\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{50}{51}\cdot\frac{51}{15}:\frac{34}{15}\)
\(=\frac{50}{51}\cdot\frac{51}{15}\cdot\frac{15}{34}=\frac{50\cdot51\cdot15}{51\cdot15\cdot34}=\frac{50}{34}=\frac{25}{17}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
29/19.49/51+29/19.34/51-29/19.32/51
=29/19.(49/51+34/51-32/51)
=29/19.1
=29/19
\(\dfrac{29}{19}.\dfrac{49}{51}+\dfrac{29}{19}.\dfrac{34}{51}-\dfrac{29}{19}.\dfrac{32}{51}\)
\(=\dfrac{29}{19}.\left(\dfrac{49}{51}+\dfrac{34}{51}-\dfrac{32}{51}\right)\)
\(=\dfrac{29}{19}.1\)
\(=\dfrac{29}{19}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\dfrac{34}{51}\) = \(\dfrac{34:17}{51:17}\) = \(\dfrac{2}{3}\)
\(\dfrac{34}{51}=\dfrac{34:17}{51:17}=\dfrac{2}{3}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(=1-\dfrac{17^{12}\cdot2^6\cdot3^2\cdot7}{17^6\cdot\left(3^4\cdot5^2-2^2\cdot1\right)}\)
\(=1-\dfrac{2^6\cdot3^2\cdot7}{81\cdot25-4\cdot1}\)
\(=1-\dfrac{4032}{2021}=-\dfrac{2011}{2021}\)
2/3