Question

12 supra 25 : (4 supra 5 : 9 supra 35​

Answer 1

Răspuns:

12/25 : (4/5 : 9/35)=

12/25 : (4/5 × 35/9)=

12/25 : ( 4/1 × 7/9)=

12/25 : 28/9=

12/25 × 9/28=

3/25 × 9/7 =

27/175

........

Answer 2

Explicație pas cu pas:

$\frac{12}{25} : \Big( \frac{4}{5} : \frac{9}{35}\Big) = \frac{12}{25} : \Big( \frac{4}{5} \cdot \frac{35}{9}\Big) = \frac{12}{25} : \frac{4 \cdot 7}{9} = \frac{12}{25} \cdot \frac{9}{4 \cdot 7} = \frac{3 \cdot 9}{25 \cdot 7} = \bf \frac{27}{175}$