Question

пропорция

(1,3х-0,72)*9/13=0,72*19 4/13

Answer 1

Ответ:

(1,3х-0,72)*9/13=0,72*19 4/13=

$( \frac{13}{10} x - \frac{18}{25} ) \times \frac{9}{13} = \frac{18}{25} \times \frac{251}{13} = \frac{9}{10} x - \frac{162}{325} = \frac{4518}{325} = 585x - 324 = 9036 \\ 585x = 9036 + 324 \\ 585x = 9360 \\ x = 16$