Question

You purchase 5 pounds of apples and 2 pounds of oranges for $9.your friend purchases 5 pounds of apples and 6 pounds of oranges for $17

Answer 1

Apple is a dollar per pound, and orange is 2 dollar per pound.
5a+2o=9
- 5a+6o=17
-4o=-8
-4o/-4=-8/-4
O=2

5a+2(2)=9
5a+4=9
-4 -4
5a=5
5a/5=5/5
A=1