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Hi Toto, This is “assumption method “ , you can learn from YouTube https://youtu.be/5505UUiCal0 , subscribe and go to playlist and look for assumption method, there are few examples for you to improve your math.
Date Posted:
5 years ago
Thanks
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Do you learn algebra method?
If yes...
let Girl=X
Let Boy =y
If yes...
let Girl=X
Let Boy =y
Date Posted:
5 years ago
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Here is guess and check method.
Date Posted:
5 years ago