2.7 - 20 + 39 = 21.7
Wiki User
∙ 2011-01-30 17:21:5339 + 39 + 39 + 39 + 39 + 39 = 234
15
59
273
61
5
-21.
The commutative property of addition.
90
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.