Mathematics, 24.08.2019 15:10 timmonskids6027

Which options could be the next step in simplifying this expression?
15 + (5 + 21)
choose exactly two answers that are correct.
a.
36 + 20 (use the commutative property)
b.
15 + 26 (use order of operations)
c.
20 + 36 (use the distributive property)
d.
20 + 21 (use the associative property)

Answers: 2

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Which options could be the next step in simplifying this expression?
15 + (5 + 21)
choo...