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bekahmiller2001
03.10.2019 •
Mathematics
What property is shown by the equation?
column a
column b
abc
1.
(34 + 11) + 9 = (11 + 34) + 9
abc
2.
25 + (–15 + 4) = (25 + (–15)) + 4
abc
3.
–(–21 + 8) = 21 + (–8)
abc
4.
–30 + (–16) = –16 + (–30)
a.
commutative property
b.
associative property
c.
opposite of a sum property
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Ответ:
if one side is 7 more than 13+7=20ft