Mathematics

6 July, 16:30

Aida applied the distributive property to write the equivalent expressions below.

15 + 21 = 3 (4 + 8)

What is Aida's error?

Aida used 3 as the factor, which is not common to 15 and 21.

Aida did not correctly divide by the common factor to get (4 + 8).

Aida did not apply the correct operations to the expressions.

Aida wrote two expressions that are not equivalent.

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