Question 419531
child tickets ------ x
adult tickets -------y

...
x+y=1050
5x+8y=7350

x+y=1050	.............1	
5x+8y=7350.............2	
								
multiply (1)by	-8			
Multiply (2) by	1			
-8x-8y	=-8400		
5x+8y=7350		
								
Add the two equations								
								
-3x=-1050		
								
/-3							
								
x=350						
								
plug value of x in (1)								
								
x+y=1050		
350+y=1050		
y=1050-350
y=700