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| Pregunta | Respuesta |
| What happens if the fraction in an addition problem do not have the same denominator? | You must rewrite the problem, so that all of the fractions have the same denominator. This means raising at least one of the fractions to the highest term. |
| Common Denominators | A number that can be divided evenly by both of the denominators in the problem. |
| Lowest Common Denominator (LCD) | The smallest number that can be divided evenly of the denominator |
| What do you sometimes need to do? | Raise both fractions to higher terms |
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