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Select the expressions that are equivalent to 7(r+2).7(2+r)14r+77r+1414rSubmit

Question

Select the expressions that are equivalent to 7(r+2).7(2+r)14r+77r+1414rSubmit

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Solution

The expressions equivalent to 7(r+2) are:

  1. 7(2+r): This is equivalent because addition is commutative, meaning the order in which numbers are added does not change the result. So, r+2 is the same as 2+r.

  2. 14r+14: This is equivalent because it is the result of distributing the 7 in 7(r+2), i.e., 7r + 72 = 14r + 14.

The expressions 7r+14 and 7r+7 are not equivalent to 7(r+2).

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