# Chapter 7 - Vocabulary Check - Page 552: 6

$reciprocals$.

#### Work Step by Step

Given any nonzero number/expression, the reciprocal of that number/expression is 1 over that number/expression. Reciprocal of $\frac{2x}{7}$ = $\frac{1}{\frac{2x}{7}}$. $\frac{1}{\frac{2x}{7}}$ = 1 $\div$ $\frac{2x}{7}$ = 1 $\times$ $\frac{7}{2x}$ = $\frac{7}{2x}$ .

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