Вообще говоря, операция приведения

Вообще говоря, операция приведения системы к виду, удобному для итераций, не является простой и требует специальных знаний, а также существенного использования специфики системы.
Самый простой способ приведения системы к виду, удобному для итераций, состоит в следующем. Из первого уравнения системы выразим неизвестное x1:

Результаты (английский) 1:

Generally speaking, the cast operation system to convenient for iterations is not easy and requires special knowledge, as well as the significant use of the specifics of the system. The easiest way to bring the system to its convenient for iterations, is as follows. From the first equation system express the unknown x 1:

Результаты (английский) 2:

Generally speaking, the operation of bringing the system to a form suitable for iterations, is not simple and requires no special knowledge, but also a significant use of the system specific.
The easiest way to bring the system to a form suitable for iterations, is as follows. From the first equation we express the unknown x1:

Результаты (английский) 3:

generally speaking, the operation of the system, convenient for its iterations is not straightforward and requires specialized knowledge, as well as the substantial use of the specificity of the system.the most simple way to bring the system to the type, convenient for its iterations, is as follows. from the first equation system to express the unknown x1: