Question

помогите пожалуйстаᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠᅠ​

Answer 1

Ответ:

$\frac{2}{5} +\frac{3}{10} +x = 2\frac{1}{4} \\\\\frac{4}{10} +\frac{3}{10} +x = 2\frac{1}{4} \\\\\frac{7}{10} +x = 2\frac{1}{4}$

$x = 2\frac{1}{4} - \frac{7}{10} \\\\x = 2\frac{5}{20} -\frac{14}{20} \\\\x = 1\frac{11}{20}$

Пошаговое объяснение: