Question 419169
2\5x - 1\2y -5=0 
4x-5y=50.........................1
0.07x + 0.06y-200=0
multiply by 100
7x+6y=20000......................2

4	x	+	-5	y	=	50	.............1	
7	x	+	6	y	=	20000	.............2	
								
multiply (1)by 					6			
Multiply (2) by					5			
24	x	+	-30	y	=	300		
35	x	+	30	y	=	100000		
								
Add the two equations								
								
59x=	100300		
								
/59							
								
x=1700						
								
plug value of x in (1)								
								
4	x	+	-5	y	=	50		
6800		+	-5	y	=	50		
			-5	y	=	50	+	-6800
			-5	y	=	-6750		
				y	=	1350