Subtraction using addition

 

subtraction with adding

4531
3726
====
add 3 to both items. 6 and 3 makes 9
4534
3729
====
add 70 to both items. 70 and 20 makes 90
4604
3799
====
add 200 to both items. 700 and 200 makes 900
4804
3999
====
====
result 804 + 1 = 805

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2 Comments

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2 responses to “Subtraction using addition

  1. I read some of your posts today – I love them!

    Here’s a bit of semirelevant verse !!
    https://howardat58.wordpress.com/2014/07/07/i-cant-do-math/

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