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Lösung 1.2:2b

Aus Online Mathematik Brückenkurs 1

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In this case, we need only multiply the top and bottom of the first fraction by 2.
In this case, we need only multiply the top and bottom of the first fraction by 2.
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{{Displayed math||<math>\frac{1}{4}-\frac{1}{8}=\frac{1}{4}\cdot \frac{2}{2}-\frac{1}{8}=\frac{2}{8}-\frac{1}{8}\,</math>.}}
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{{Abgesetzte Formel||<math>\frac{1}{4}-\frac{1}{8}=\frac{1}{4}\cdot \frac{2}{2}-\frac{1}{8}=\frac{2}{8}-\frac{1}{8}\,</math>.}}
The lowest common denominator is thus 8.
The lowest common denominator is thus 8.

Version vom 08:14, 22. Okt. 2008

To determine the lowest common denominator for the expression, we have to multiply the top and bottom of each fraction by as small an amount as possible in order for them to have a common denominator.

In this case, we need only multiply the top and bottom of the first fraction by 2.

41−81=4122−81=82−81.

The lowest common denominator is thus 8.

Von „http://wiki.sommarmatte.se/wikis/2009/bridgecourse1-TU-Berlin/index.php/L%C3%B6sung_1.2:2b“