Question

Catul fracțiilor a/b și c/D este egal cu produsul primei fracții cu inversa celei de a doua fracții a) b) c)

Answer 1

Explicație pas cu pas:

$\frac{a}{b} : \frac{c}{d} = \frac{a}{b} \cdot \frac{d}{c} = \frac{a \cdot d}{b \cdot c}$

b)

$2 \frac{3}{2} : \frac{10}{14} = \frac{7}{2} \cdot \frac{ \not14}{ \not10} = \frac{7}{2} \cdot \frac{7}{5} = \frac{49}{10} = 4 \frac{9}{10}$

c)

$5 \frac{1}{2} : 10 \frac{1}{4} = \frac{11}{2} : \frac{41}{4} = \frac{11}{ \not2} \cdot \frac{ \not4}{41} = \frac{11}{1} \cdot \frac{2}{41} = \frac{22}{41}$

Answer 2

$\it 2\dfrac{3}{2}:\dfrac{10}{14}=\dfrac{7}{\not2}\cdot\dfrac{\not14\ ^7}{10}=\dfrac{49}{10}=4,9$

$\it c)\ 5\dfrac{1}{2}:10\dfrac{1}{4}=\dfrac{11}{2\not}\cdot\dfrac{\not4\ ^2}{41}=\dfrac{22}{41}$