Seguindo a regra: 2.j -3i. j = coluna, i = linha

\(A = \begin{bmatrix} 2\cdot1-3\cdot1 &2\cdot2-3\cdot1&2\cdot3-3\cdot1 & 2\cdot4-3\cdot1 \\[0.3em] 2\cdot1-3\cdot2 &2\cdot2-3\cdot2&2\cdot3-3\cdot2 & 2\cdot4-3\cdot2\\[0.3em] 2\cdot1-3\cdot3 &2\cdot2-3\cdot3&2\cdot3-3\cdot3 & 2\cdot4-3\cdot3\\[0.3em] \end{bmatrix}\\ A = \begin{bmatrix} -1 &1&3& 5 \\[0.3em] -4 &-2&0 & 2\\[0.3em] -7 &-5&-3 & -1\\[0.3em] \end{bmatrix}\)