English, 22.08.2019 05:40 sarah8479

Which statement shows the associative property of addition?
a.
if m + 3 = 18, then 18 = m + 3
b.
(u + 7) + 13 = u + (7 + 13)
c.
21 + 2y = 2y + 21
d.
3 · (5 · x) = (3 · 5) · x

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Which statement shows the associative property of addition?
a.
if m + 3 = 18, then 18 =...

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