1. The problem statement, all variables and given/known data Write in Vector-Matrix form then write the augmented matrix of the system. r + 2s + t = 1 r - 3s +3t = 1 4s - 5t = 3 2. Relevant equations The matrix to which the operations will be applied is called the augmented matrix of the system Ax = b, It is formed by appending the entries of the column vector b (right hand side of the equation) to those of the coefficient matrix A, creating a matrix that is now of order m x (n + 1). 3. The attempt at a solution I know to use the coefficients to build the rows and columns of a 3 x 3 (?) matrix but I don't understand the augmentation part.