x + 3y + 5z = 51 x + 3y + 7z = 60 Solve with the Augmented method for matrix.
Added by Melissa M.
Step 1
To do this, we can subtract the first row from the second row: $$ \left[\begin{array}{ccc|c} 1 & 3 & 5 & 51 \\ 0 & 0 & 2 & 9 \end{array}\right] $$ Now, we can divide the second row by 2 to get the $z$ term by itself: $$ \left[\begin{array}{ccc|c} 1 & 3 & 5 & 51 Show more…
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