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Wiki User
2.7 - 20 + 39 = 21.7
39 + 39 + 39 + 39 + 39 + 39 = 234
15
59
273
61
5
The commutative property of addition.
-21.
90
75+2(32)+4(39)+47 =75+64+156+47 =75+220+47 =122+220 =342
-39 + 18 = -21 it is the same as saying 18-39.