Mohon Bantuannya... Sekalian pake cara

jawab

A + B^t = C

[tex] \left[\begin{array}{ccc}a&a+d\\b&c\end{array}\right]\,+\, \left[\begin{array}{ccc}a-1&-c\\0&d\end{array}\right] \,=\, \left[\begin{array}{ccc}3&0\\1&-2b\end{array}\right] [/tex]

a + a - 1 = 3
2a = 4
a = 2

b +0 = 1
b= 1

a+d - c = 0
2 +d - c = 0
d - c = 2
c - d = - 1 ..(i)

c+ d = - 2b dan b = 1
c + d = - 2 ...(ii)

c - d = - 1
c + d = -2 ..|(+)
2c = -3
c = - 3/2