[tex]1- \frac{1}{2}= \frac{1}{1}- \frac{1}{2} [/tex]=
amplificam cu 2
=[tex] \frac{2}{2}- \frac{1}{2} = \frac{1}{2} [/tex]
[tex]1- \frac{5}{7} = \frac{1}{1}- \frac{5}{7} = \frac{7}{7}- \frac{5}{7}= \frac{2}{7} [/tex] (aici am amplificat cu 7 prima fractie)
[tex]1- \frac{6}{10}= \frac{1}{1} - \frac{6}{10}= \frac{10}{10}- \frac{6}{10}= \frac{4}{10} = \frac{2}{5} [/tex] (aici am amplificat cu 10 prima fractie , iar la sfarsit am simplificat cu 2)
[tex]1- \frac{9}{10}= \frac{1}{1}- \frac{9}{10}= \frac{10}{10}- \frac{9}{10}= \frac{1}{10} [/tex] (am amplificat cu 10 prima fractie)
[tex]1- \frac{77}{100}= \frac{1}{1}- \frac{77}{100}= \frac{100}{100} - \frac{77}{100}= \frac{23}{100} [/tex] (am amplificat prima fractie cu 100)
[tex]1- \frac{39}{100}= \frac{1}{1}- \frac{39}{100}= \frac{100}{100}- \frac{39}{100}= \frac{61}{100} [/tex] (am amplificat prima fractie cu 100)
