Question

решить задачу дробовик плз​

Answer 1

Ответ:  1,1 л воды = 1 л и 100 мл воды .

х л воды

$\displaystyle 2\frac{1}{5}+\Big(2\frac{1}{5}-\frac{1}{2}\Big)+x=5\\\\\frac{11}{5}+\Big(\frac{11}{5}-\frac{1}{2}\Big)+x=5\\\\\frac{11}{5}+\frac{22-5}{10}+x=5\\\\\frac{11}{5}+\frac{17}{10}+x=5\\\\\frac{22+17}{10}+x=5\\\\\frac{39}{10}+x=5\\\\x=5-\frac{39}{10}\\\\x=\frac{50-39}{10}\\\\x=\frac{11}{10}=1,1$