Brüche-Test: Brüche und Variablen (Addition)

Addition von Brüchen

Berechne die Wert für x und trage sie ein:

1.) \( \frac{3}{2} + \frac{x}{2} = \frac{12}{2} \Rightarrow x = \)
2.) \( \frac{1}{4} + \frac{x}{4} = \frac{12}{8} \Rightarrow x = \)
3.) \( \frac{1}{7} + \frac{x}{21} = \frac{9}{21} \Rightarrow x = \)
4.) \( \frac{6}{40} + \frac{x}{20} = \frac{11}{5} \Rightarrow x = \)
5.) \( \frac{5}{14} + \frac{5}{x} = \frac{20}{7} \Rightarrow x = \)
6.) \( \frac{1}{3} + \frac{5}{x} = \frac{2}{5} \Rightarrow x = \)
7.) \( \frac{2}{7} + \frac{24}{x} = \frac{16}{14} \Rightarrow x = \)
8.) \( \frac{10}{6} + \frac{15}{x} = \frac{30}{12} \Rightarrow x = \)
9.) \( \frac{x}{24} + \frac{1}{24} = \frac{36}{48} \Rightarrow x = \)
10.) \( \frac{x}{5} + \frac{26}{10} = \frac{27}{5} \Rightarrow x = \)
11.) \( \frac{x}{78} + \frac{5}{39} = \frac{72}{156} \Rightarrow x = \)
12.) \( \frac{5}{20} + \frac{x}{40} = \frac{60}{160} \Rightarrow x = \)


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