Question

57: (21x1 +17) -) = 1,9 3​

Answer 1

Ответ:

х=13/21

х≠17/21

Пошаговое объяснение:

57: (21x1 +17) -) = 1,9 3

Найти область допустимых значений

57: (21x1 +17) = 1,9

х≠ 17/21

любое выражение умноженное на 1 не изменеятся

57:(21х +17) = 1.9

сократим дробь

57/21х +17 = 1.9

получим

х= 13/21

х≠17/21

Answer 2

It seems like there might be a mistake or a missing part in the expression you provided. The expression has an extra ")" after the term "(21x1 +17)" and a fraction "1,9 3" at the end, but it's unclear how it fits into the equation.

If you could provide more information or clarify the expression, I would be happy to help you solve or simplify it.