Question 958738
.
H=number of hamburgers; C=number of cheeseburgers=H-65
H+C=385 Substitute for C
H+(H-65)=385 Add 65 to each side.
2H=450 Divide each side by 2. 
H=225 ANSWER: There were 225 hamburgers sold
CHECK: 
C=H-65=225-65=160 There were 160 cheeseburgers sold.
H+C=385
225+160=385
385=385