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 + 18 = -21 it is the same as saying 18-39.
8 + 31 = 39
b = 12 12(3)+3 = 39, use a calculator to find out
11
39 + 39 + 39 + 39 + 39 + 39 = 234
15
59
273
61
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
5
2.7 - 20 + 39 = 21.7
The commutative property of addition.
-21.
75+2(32)+4(39)+47 =75+64+156+47 =75+220+47 =122+220 =342
90