Question

Уравнение 5 5/7-x=1 3/14

Answer 1

$\displaystyle 5\frac{5}{7}-x=1\frac{3}{14}\\\\\frac{40}{7}-x=\frac{17}{14}\\\\-x=\frac{17}{14}-\frac{40}7}\\\\-x=-\frac{9}{2}\\\\x=\frac{9}{2}=4\frac{1}{2}=4,5$