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September 17, 2014

September 17, 2014

Posted by **Angie** on Monday, September 22, 2008 at 7:54pm.

- Math -
**Angela**, Monday, September 22, 2008 at 7:58pmi don't get it

- Math -
**Raymond**, Sunday, June 12, 2011 at 10:46pmJust convert the word problem to a number problem.

Let x = the number that you choose between 50 and 100.You add 76 to x or x+76 then you take the hundreds place digit away from its place in the sum of the 2 numbers and add it to the x+76. This is the same as subtracting 99 from the x+76 Why? Because you moved the hundreds place number out of its place. Its no longer there and you add it as a 1 to x+76. That is the same as adding (-100+1) or -99 to the x+76 so, knowing this, lets see how it would look in purely numeric form. Choose a number x between 50 and a hundred. Add 76 to it x+76 then x+76-99 =x-23. Subtract this number from your original number x or x-(x-23) or x-x+23 then the x's cancel each other out and the only thing remaining is 23. The key factor is how much you add to your original number. if instead of adding 76 I added 89 then the result would always be 10 assuming you followed the rest of the guidelines.

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