Question

The symphonic band is having their annual winter performance. The equation 2a+5s=41 represents the money collected on the first night of their performance and 3a+6s=54 represents the money they collected on the second night of their performance

Answer 1

Assuming that you are trying to find the values of a and s; 

 (2a+5s=41)3 -----> 6a+15s=123 
-(3a+6s=54)2 -----> 6a+12s=108

 6a+15s=123
-6a+12s=108 
___________
0   + 3s=15 
          s=15/3 
          s=5 

2a+5(5)=41 
2a=41-25 
2a=16 
a=16/2 
a=8 

Hope I helped :)