Нужно привести матрици к треугольному виду.
1)
8 1 1 -1 2
3 -3 -2 1 -3
5 4 3 -2 5
2)
1 -3 1 2 1
2 -5 4 3 7
1 -2 3 1 3

мы этим не занимаемся.

А в каком разделе занимаються..?))
И вы выше сами писали про такой вид)))

В платном.

ked a marriage on her wedding date. we were careworn because amber and her boyfriend were not even engaged, however she and her boyfriend claimed that they knew that turned into the date they were getting married. they hav

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