Question

Решите уравнение: (2/3x+1/8x)•24=38

Answer 1

(2/3х + 1/8х) * 24 = 38,
16/24х + 3/24х = 38 : 24,
19/24х = 38/24,
х = 38/24 : 19/24,
х = 38/24 * 24/19,
х = 2,
Проверка:
(2/3*2 + 1/8*2) * 24 = 38,
(4/3 + 1/4) * 24 = 38,
(16/12 + 3/12) * 24 = 38,
19/12 * 24 = 38,
19*2 = 380
38 = 38

Answer 2

(2/3х+1/8х)*24=38
раскрываем скобки
24*2/3х+24*1/8х=38
сокращаем в дробях числитель и заменитель
8*2х+3*1х=38
16х+3х=38
приводим подобные
19х=38
х=38/19
х=2