Which property was applied to create this equivalent expression? 7 x plus open paren 5 plus 6 x close paren rightarrow open paren 7 x plus 5 close paren plus 6 x

The grouping changes from 7x + (5 + 6x) to (7x + 5) + 6x, while the order of the terms stays the same. Changing how terms are grouped without changing their order uses the associative property. Therefore, the correct choice is the associative property only.

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