How to show the tens fact you used. write the difference.
14-6=
=

First:
14 - 6 = 8

Now, the number 14 has one tens and four ones, therefore it can be written as : 10+4

Now, rewriting the given expression:
14-6 = 10+4-6 = 10-2

The result of 10-2 is also 8.

You need the internet to you

Set square i think so