Mathematics
Mathematics, 24.09.2020 05:01, alex12354

Several properties are used to evaluate this expression. Identify the property used in each step. 21 + (36 + 0 + 19)
21 +(36 +19):
21 +(19 +36):
(21 +19) + 36:
40 + 36
76

answer
Answers: 2
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