What are the steps to solve 743-517=

So first you take the 743 and the 517 and put it in a form like this
743
-517
——
226

So you star with the three , you can’t subtract three from seven so you take away 1 from the 4 and give the one to the three so it will be thirteen. And you keep doing this until you find you answer only if the top number is smaller than the bottom number

734
-517

217

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