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# Rational Equations Using Proportions

## Cross-multiply to solve

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Rational Equations Using Proportions

### Vocabulary Language: English Spanish

proportion

proportion

A statement in which two fractions are equal: $\frac{a}{b} = \frac{c}{d}$.
Zero Product Property

Zero Product Property

The only way a product is zero is if one or more of the terms are equal to zero: $a\cdot b=0 \Rightarrow a=0 \text{ or } b=0.$
Rational Expression

Rational Expression

A rational expression is a fraction with polynomials in the numerator and the denominator.