Question

Помогите срочно решить

Answer 1

Ответ:

2

Объяснение:

$\frac{3,5 + 4\frac{2}{3} + 2\frac{2}{15}}{1\frac{1}{20}+4,1} = \frac{3\frac{1}{2} + 4\frac{2}{3} + 2\frac{2}{15}}{1\frac{1}{20}+4\frac{1}{10}} = \frac{\frac{7}{2}+\frac{14}{3} + \frac{32}{15}}{\frac{21}{20}+\frac{41}{10}} = \frac{\frac{7\cdot15+14\cdot 10 + 32\cdot2}{30}}{\frac{21+41\cdot2}{20}} = \frac{\frac{105+140+64}{30}}{\frac{21+82}{20}} = \frac{\frac{309}{30}}{\frac{103}{20}} = \\\\\frac{309\cdot20}{30\cdot103} = \frac{3\cdot20}{30} = \frac{60}{30} = 2$