Question

решите уравнение 4целых1,2:х+1целая3,4=3целых19,28

Answer 1

$4 frac{1}{2} / x + 1 frac{3}{4} = 3 frac{19}{28}$

$4 frac{1}{2} / x = 3 frac{19}{28} - 1 frac{3}{4}$

$4 frac{1}{2} / x = 2 frac{19-21}{28} = 1 frac{2}{28} = 1 frac{1}{14}$

$x = 4 frac{1}{2} / 1 frac{1}{14} = frac{9*14}{2*15} = frac{9*7}{15} = frac{63}{15} = 4 frac{3}{15} = 4 frac{1}{5}$