(3)
and
3b + 8d – 22 = 0 (4)
Solving (1) and (2), we get a = –191, c = 77 Solving (3) and (4), we get b = – 110,
d = 44 Rationalised 2023-24
 72
MATHEMATICS
Therefore
D =
191
110
77
44
a
b
c
d
−
−




=








Miscellaneous Exercise on Chapter 3
1