Answer:

Step-by-step explanation:
Divide n by 100,000.
This gives us the "number of times 100,000 fits in n", or, "how many 100,000's n is", or as the hint says, "how many times larger n is than 100,000".
All represented by this formula:

12+4+9+13+7+11+5+2+_+_ /10= 8
x10 both sides
12+4+9+13+7+11+5+2+_+_=80
63+_+_=80
-63 both sides
_+_= 17
any two numbers that add up to 17 can go in the planks
7,10
Put the equation in Photo math
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>
6410 is the answer because you move the decimal place 3 times