Question

Calculeaza,transformand intregii in fractie:
1-1/2=
1-5/7=
1-6/10=
1-9/10=
1-77/100=
1-39/100=
Va rog ajutati-ma ! Dau coroana

Answer 1

$1- \frac{1}{2}= \frac{1}{1}- \frac{1}{2}$=
amplificam cu 2 
=$\frac{2}{2}- \frac{1}{2} = \frac{1}{2}$

$1- \frac{5}{7} = \frac{1}{1}- \frac{5}{7} = \frac{7}{7}- \frac{5}{7}= \frac{2}{7}$ (aici am amplificat cu 7 prima fractie)

$1- \frac{6}{10}= \frac{1}{1} - \frac{6}{10}= \frac{10}{10}- \frac{6}{10}= \frac{4}{10} = \frac{2}{5}$  (aici am amplificat cu 10 prima fractie , iar la sfarsit am simplificat cu 2)

$1- \frac{9}{10}= \frac{1}{1}- \frac{9}{10}= \frac{10}{10}- \frac{9}{10}= \frac{1}{10}$ (am amplificat cu 10 prima fractie)


$1- \frac{77}{100}= \frac{1}{1}- \frac{77}{100}= \frac{100}{100} - \frac{77}{100}= \frac{23}{100}$  (am amplificat prima fractie cu 100)

$1- \frac{39}{100}= \frac{1}{1}- \frac{39}{100}= \frac{100}{100}- \frac{39}{100}= \frac{61}{100}$ (am amplificat prima fractie cu 100)

Answer 2

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