Question

решите уравнение 13/21 - (x-2 5/7)= 3/14

Answer 1

решаем уравнение
.........

Answer 2

А ответ?

Answer 3

ответ 3 542

Answer 4

13/21 - (x-2 5/7)= 3/14, 13/21 - x + 19/7 = 3/14, 3 - 21x + 57 = 9/2 = 4,5, 21x = 60 - 4,5 = 55,5 x = 55,5/21 = 2,64