Question

Решите уравнение (7/12+11/30x):7 1/4=1/3
7 1/4 = Семь целых одна четвертая.

Answer 1

$( frac{7}{12}+frac{11}{30}x)$$:7frac{1}{4}= frac{1}{3}$
$frac{7}{12}+ frac{11}{30}x= frac{1}{3} *7 frac{1}{4}$
$frac{7}{12}+ frac{11}{30}x= frac{1}{3} * frac{29}{4}$
$frac{7}{12}+ frac{11}{30}x= frac{29}{12}$
$frac{35}{60}+ frac{22}{60}x= frac{29}{12}$
$frac{22}{60}x= frac{29}{12}- frac{35}{60}$
$frac{22}{60}x= frac{145}{60} - frac{35}{60}$
$frac{22}{60}x= frac{110}{60}$
$x= frac{110}{60}: frac{22}{60}$
$x= frac{110}{60}* frac{60}{22}$
$x= frac{110}{22}$
$x=5$