Mathematics, 25.11.2019 17:31 whitakers87

Which expression shows that 11 + 7 = 5 + 13?
a.
(5 + 6) + 7 = 5 + (6 + 7)
b.
6 + 6 + 6 = 18
c.
5 + 9 + 4 = 6 + 7 + 5
d.
(11 + 4) + 3 = (5 + 7) + 6

Answers: 3

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Which expression shows that 11 + 7 = 5 + 13?
a.
(5 + 6) + 7 = 5 + (6 + 7)
b.