Question

80%din 2intregi 13/16 65%din 1intreg 19/26 175%din 2intregi 4/7​

Answer 1

Răspuns:

Explicație pas cu pas:

$80\% \cdot 2\dfrac{13}{16} = \dfrac{80}{100} \cdot \dfrac{2*16+13}{16} = \dfrac{4}{5} \cdot \dfrac{45}{16} = \dfrac{9}{4} = 2\dfrac{1}{4}$

$65\% \cdot 1\dfrac{19}{26} = \dfrac{65}{10} \cdot \dfrac{26+19}{26} = \dfrac{13}{2} \cdot \dfrac{45}{26} = \dfrac{45}{4} = 11\dfrac{1}{4}$

$175\% \cdot 2\dfrac{4}{7} = \dfrac{175}{100} \cdot \dfrac{2*7+4}{7} = \dfrac{7}{4} \cdot \dfrac{18}{7} = \dfrac{9}{2} = 4\dfrac{1}{2}$