4x + 3y – 4 = 0; 6x = 8 – 5y

(ii) 4x + 3y – 4 = 0; 6x = 8 – 5y

Sol. 4x + 3y – 4 = 0

∴  4x + 3y = 4

6x = 8 – 5y

∴  6x + 5y = 8

D	=	4	3	=	(4 × 5) – (6 × 3)	=	20 – 18	=	2
		6	5

DX	=	4	3	=	(4 × 5) – (8 × 3)	=	20  - 24	=	- 4
		8	5

DY	=	4	4	=	(4 × 8) – (6 × 4)	=	32  - 24	=	8
		6	8

By Cramer's rule,

x	=	Dx	=	-4	=	-2
		D		2

y	=	Dx	=	8	=	4
		D		2

x = - 2  and y = 4 is the solution of given simultaneous equations.