Mathematics, 14.09.2019 12:10 rileyeddins1010
Solve. x1 – 3x2 + 4x3 = -4 3xı – 7x2 + 7x3 = -8 –4x1 + 6x2 – x3 = 7
Answers: 2
![\left[\begin{array}{ccc}1&-3&4|-4\\3&-7&7|-8\\-4&6&-1|7\end{array}\right]](/tpl/images/0231/3824/109cb.png)
![\left[\begin{array}{ccc}1&-3&4|-4\\0&2&-5|4\\0&-6&15|-9\end{array}\right]](/tpl/images/0231/3824/7b589.png)
![\left[\begin{array}{ccc}1&-3&4|-4\\0&1&\frac{-5}{2}|2\\0&-6&15|-9\end{array}\right]](/tpl/images/0231/3824/b6e1b.png)
![\left[\begin{array}{ccc}1&-3&4|-4\\0&1&\frac{-5}{2}|2\\0&0&0|3\end{array}\right]](/tpl/images/0231/3824/4ddee.png)
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Solve. x1 – 3x2 + 4x3 = -4 3xı – 7x2 + 7x3 = -8 –4x1 + 6x2 – x3 = 7...
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