59
2.7 - 20 + 39 = 21.7
Something's missing from your question. There are 20 answers to your question. 39 + 0 = 39 38 + 1 = 39 37 + 2 = 39 . . . 19 + 20 = 39
39 + 39 + 39 + 39 + 39 + 39 = 234
20 = 400
15
273
39 + 1 35 + 5 20 + 20 hope it helps alot by caden dotts
61
5
20 plus 20 equals 4020 plus 20 = 40
The commutative property of addition.
-21.