tolong di bantu dong kak.... tentukan nilai a, b, c dan d...

Mapel : Matematika Wajib (Kelas X SMA)
Materi : Matriks
Indikator : Mencari HP dalam suatu kesamaan matriks

Langkah Penyelesaian dan Jawaban :
[tex]\left[\begin{array}{ccc}2a&c - 1\\3b&- d + 2\end{array}\right] - \left[\begin{array}{ccc}1&2\\- 3&5\end{array}\right] = \left[\begin{array}{ccc}3&1\\3&4\end{array}\right] \\ \\ \left[\begin{array}{ccc}2a - 1&c - 1 - 2\\3b - (- 3)&- d + 2 - 5\end{array}\right] = \left[\begin{array}{ccc}3&1\\3&4\end{array}\right] \\ \\ 2a - 1 = 3 \\ 2a = 3 + 1 \\ 2a = 4 \\ a = 2 \\ \\ c - 1 - 2 = 1 \\ c - 3 = 1 \\ c = 4 \\ \\ 3b - (- 3) = 3 \\ 3b + 3 = 3 \\ 3b = 0 \\ b = 0 \\ \\ [/tex] 

[tex] \\ \\ - d + 2 - 5 = - 4 \\ - d - 3 = - 4 \\ - d = - 1 \\ d = 1[/tex]