anonymous
  • anonymous
HELP:::Eric has been donating books he no longer needs to his local library. After 3 months of donating, he had 157 books left in his room. After 8 months of donating, he had 102 books left in his room. How many books per month did Eric donate on average between months 3 and 8?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
5x?
austinL
  • austinL
Correct. How many books at 8 & 5 months?
anonymous
  • anonymous
13?

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More answers

austinL
  • austinL
After three months of donating he had _____ books left. After eight months of donating he had _____ books left.
austinL
  • austinL
Hello?
anonymous
  • anonymous
i'm confused..
jdoe0001
  • jdoe0001
|dw:1377811124234:dw| so, how many did he donate between the 3rd month and the 8th month?
anonymous
  • anonymous
ummm
austinL
  • austinL
I made an error earlier. \((8−3)x=(Books~ at~ 3~ months)−(Books~ at~ 8~ months)\)
anonymous
  • anonymous
-5
anonymous
  • anonymous
x
austinL
  • austinL
8-3=?
anonymous
  • anonymous
5
austinL
  • austinL
Correct, so we have 5x=....
austinL
  • austinL
|dw:1377811212714:dw|
anonymous
  • anonymous
-5
anonymous
  • anonymous
-1??
austinL
  • austinL
No, slow down.
austinL
  • austinL
Left side of the equation is 5x.
austinL
  • austinL
5x=(Books at 3 months)−(Books at 8 months)
austinL
  • austinL
|dw:1377811365308:dw|
anonymous
  • anonymous
5x=157?
jdoe0001
  • jdoe0001
look at it this way you have some books you don't want from an older grade so you go to the local Good Will store and givem away a few every month on the 3rd month of donating, you still had left 157 books you didn't want 5 months later, after donating every month regularly, you only have left 102 how many have you donated in between the 3rd month and the last month?

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