Tìm x biết (1,16-x). 5,25 / (10 5/9- 7 1/4). 2 2/17= 75%

* Hướng dẫn giải

$\frac{\left(1,16-x\right).5,25}{\left(10\frac{5}{9}-7\frac{1}{4}\right).2\frac{2}{17}}=75\%$

$\frac{\left(\frac{116}{100}-x\right).\frac{525}{100}}{\left(\frac{95}{9}-\frac{29}{4}\right).\frac{36}{17}}=\frac{75}{100}$

$\frac{\left(\frac{29}{25}-x\right).\frac{21}{4}}{\frac{119}{36}.\frac{36}{17}}=\frac{3}{4}$

$\frac{\left(\frac{29}{25}-x\right).\frac{21}{4}}{7}=\frac{3}{4}$

$\left(\frac{29}{25}-x\right).\frac{21}{4}.4=7.3$

$\left(\frac{29}{25}-x\right).21=21$

$\frac{29}{25}-x=21:21$

$\frac{29}{25}-x=1$

$x=\frac{29}{25}-1$

$x=\frac{4}{25}$