Question

125 задание помогите. ​

Answer 1

Ответ:

$1) \frac{4}{a} = \frac{16}{20} \\ \frac{4}{a} = \frac{4}{5} \\ a = 5$

$2) \frac{c}{8} = \frac{25}{40} \\ \frac{c}{8} = \frac{5}{8} \\ c= 5$

$3) \frac{39}{27} = \frac{b}{9} \\ \frac{13}{9} = \frac{b}{9} \\ b= 13$

$4) \frac{49}{32} = \frac{12}{d} \\ d = \frac{12 \times 32}{49} \\ d = \frac{384}{49} \\ d = 7 \frac{41}{49}$