посчитайте задание 481 ​

x= 2/7

2 3/5 : (x+ 1 3/4) - 1 2/5 = 1/3, x - (17/14)

13/5 : (x + 17/14) - 7/5 = 1/3

13/5 : 14x+17/14 - 7/5 = 1/3

13/5 · 14/14x+17 - 7/5 = 1/3

182/5(14x + 17) = 1/3 +7/5

182/5(14x + 17) = 26/15

2730 = 130(14x + 17)

21 = 14x + 17

-14x =17 - 21

-14x = -4

x= 2/7