Question 441228
let one number be x & the other y

1	x	+	1	y	=	50	.............1	
2	x	+	-1	y	=	10	.............2	
Add the two equations								
3	x				=	60		
/	3							
x	=	20
						
plug value of 			x	in (1)				
1	x	+	1	y	=	50		
20		+	1	y	=	50		
			1	y	=	50		-20
			1	y	=	30		
				y	=	30