Question 795381
Each course at a community college is worth 1 or 2 credits.
 A group of students is taking a total of 26 courses that are worth a total of 39 credits.
 How many 1- credit courses are being taken?
 How many 2- credit courses are being taken? 
:
Your first equation should be:
x + y = 26
The 2nd equation should be:
1x + 2y = 39