Question

Помогите пожалуйста даю 20 баллов номер 4,реши уравнения

Answer 1

Ответ:

$1) \frac{34}{60} + \frac{8}{60} + y = \frac{41}{60} + \frac{16}{60} \\ y = \frac{41}{60} + \frac{16}{60} - \frac{34}{60} - \frac{8}{60} \\ y = \frac{41 + 16 - 34 - 8}{60} \\ y = \frac{15}{60} \\ y = \frac{1}{4} \\ y = 0.25$

$\frac{18}{30} - x = \frac{4}{30} + \frac{6}{30} \\ - x = \frac{4}{30} + \frac{6}{30} - \frac{18}{30} \\ - x = \frac{4 + 6 - 18}{30} \\ - x = - \frac{ 8}{30} \\ - x = - \frac{4}{15} \\ x = \frac{4}{15} \\ x = 0.26$

Answer 2

Ответ:

$\frac{1}{4}$

$\frac{4}{15}$

Пошаговое объяснение:

$\frac{34}{60} + \frac{8}{60} + y = \frac{41}{60} + \frac{16}{60} \\\\\frac{42}{60} + y = \frac{57}{60} \\y = \frac{57-42}{60}\\y = \frac{15}{60} \\y = \frac{1}{4}$

$\frac{18}{30} - x = \frac{4}{30} + \frac{6}{30} \\\\\frac{18}{30} - x = \frac{10}{30}\\ \\\frac{18}{30} - \frac{10}{30} = x\\\\\frac{8}{30} = x\\\\\frac{4}{15} = x$