Question 903913
let larger number be x
and smaller number be y

First condition

Dividend = divsor * quotient + remainder
3x= y*4+3

3x=4y+3
3x-4y=3

second condition
7y=5x+1

7y-5x=1

3	x		-4	y	=	3	.............1	
								
-5	x	+	7	y	=	1	.............2	
Eliminate	y							
multiply (1)by		7						
Multiply (2) by		4						
21	x		-28	y	=	21		
-20	x	+	28	y	=	4		
Add the two equations								
1	x				=	25		
/	1							
x	=	25      						
plug value of			x	in (1)				
3	x		-4	y	=	3		
75			-4	y	=	3		
			-4	y	=	3		-75
			-4	y	=	-72		
				y	=	18		1
x=	25						
y=	18						
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