Answer:
9 11
-14 5
Step-by-step explanation:
D is doing to be a 2 by 2 matrix
a b -1 -15 8 -4
c d + 0 7 = -14 12
The corresponding terms get added together to equal the corresponding term on the right.
a + -1 = 8
Add 1 on each side
a -1 +1 = 8 +1
a = 9
b + -15 =-4
Add 15 to each side
b-15+15 = -4+15
b =11
c+0 = -14
c = -14
d +7 = 12
Subtract 7 from both sides
d+7-7 = 12-7
d = 5
The matrix is
9 11
-14 5
