iii. Find Dx and Dy of the given simultaneous equations. 3x - 2y =
3 and 2x + y = 16
Answer. The given equations
are 3x - 2y = 3 and 2x + y = 16
|
|
3
|
-2
|
|
|
|
|
|
|
|
|
|
|
D =
|
|
|
=
|
(3× 1) – (2 × - 2)
|
=
|
3 + 4
|
=
|
7
|
|
|
|
|
|
2
|
1
|
|
|
|
|
|
|
|
|
|
|
|
3
|
-2
|
|
|
|
|
|
|
|
|
|
|
Dx =
|
|
|
=
|
(3× 1) – [16× (-2)]
|
=
|
3 + 32
|
=
|
35
|
|
|
|
|
|
16
|
1
|
|
|
|
|
|
|
|
|
|
|
|
3
|
3
|
|
|
|
|
|
|
|
|
|
|
Dy =
|
|
|
=
|
(3× 16) – (2 × 3)
|
=
|
48 - 6
|
=
|
42
|
|
|
|
|
|
2
|
16
|
|
|
|
|
|
|
|
|
|
