Câu hỏi của Sakura ❤

Question

Tìm x

a/ (X + $\frac{5}{3}$) x $\frac{9}{13}$= $\frac{2}{3}$

b/ 43770 : X = 560 - 434

c/ x : 3$\frac{1}{3}=2\frac{2}{5}+\frac{7}{10}$

Trần Trường An · Accepted Answer

a) $\left(x+\frac{5}{3}\right)\cdot\frac{9}{13}=\frac{2}{3}$

$x+\frac{5}{3}=\frac{2}{3}:\frac{9}{13}$

$x+\frac{5}{13}=\frac{26}{27}$

$x=\frac{5}{13}-\frac{26}{27}$

$x=\frac{-203}{351}$

b) $43770:x=560-434$

$43770:x=126$

$x=43770:126$

$x=\frac{7295}{21}$

c) $x:3\frac{1}{3}=2\frac{2}{5}+\frac{7}{10}$

$x:\frac{10}{3}=\frac{12}{5}+\frac{7}{10}$

$x:\frac{10}{3}=\frac{31}{10}$

$x=\frac{31}{10}\cdot\frac{10}{3}$

$x=\frac{31}{3}$Câu trả lời: a) $\left(x+\frac{5}{3}\right)\cdot\frac{9}{13}=\frac{2}{3}$