Q: What is 21 add 21?

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6a add 21 = 27

It is: 86+19+21 = 126

21

The factors of 21 that add up to 8 are 1 and 7.

what two factors of -21 add up to -6

The inverse operation of adding 21 is subtracting 21. This means that if you subtract 21 from a number, and then add 21 to the result, you will get back to the original number.

111

21

21

12+9=21 21+15=36 36+13=49 49+6=55

21, 21, 21, 21 , 15, 1

Add 21 to the year: 1987 + 21 = 2008 → You turned 21 on 9th April 2008.