Compare Range & show duplicates as blanks

[snowman71]

I have several rows of numbers:

7 8 9 10 11 13 14 15 17 18
7 8 10 11 12 13 14 15 17 18 19
8 11 13 14 15 16 17 18 19 20
7 8 9 10 12 13 14 16 17 18 19 20 21

If i choose numbers from the range above

8 10
12 13
14 15
19 20

Then i would like another range that had the selected numbers removed & only showed what was available & looked like:

7 9 11 17 18
7 11 17 18
11 16 17 18
7 9 16 17 18 21

[JeteMc]

I changed the arrangement of the numbers to be excluded so that they are in one row (7).
The formula used is: =IFERROR(INDEX($A2:$M2,AGGREGATE(15,6,COLUMN($A2:$M2)/(COUNTIFS($A$7:$H$7,$A2:$M2)=0)/($A2:$M2<>""),COLUMNS($A9:A9))),"")
Let us know if you have any questions.

[snowman71]

this works perfectly, thank you

[JeteMc]

You're Welcome. Thank You for the feedback and for marking the thread as 'Solved'. I hope that you have a blessed day.