Sleeping bag⇒S
backpack⇒B
S=8 pounds
S+B=31
8+B=31
B=31-8
<u>B=23 pounds</u>
<em>Answer: 23 pounds</em>
This is what you’re looking for !
Since the solution will be of the form z=k it has one solution...
3.5z=2.25z-4.25+6.25
3.5z=2.25z+2
1.25z=2
z=1.6
A single solution...