deletions | additions       diff --git a/begin_pmatrix_cccccc_a__1__.tex b/begin_pmatrix_cccccc_a__1__.tex  index 3804ca4..e9f77a7 100644  --- a/begin_pmatrix_cccccc_a__1__.tex  +++ b/begin_pmatrix_cccccc_a__1__.tex 
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\(\begin{pmatrix}{cccccc} \(\begin{pmatrix}  a_{1,1} & a_{1,2} & a_{1,3} & \dots & a_{1,n} & b_1\\  a_{2,1} & a_{2,2} & a_{2,3} & \dots & a_{2,n} & b_2\\  \end{pmatrix}\)