4,036(x-0,15x-0,4x)=5,4486

4,036(x - 0,15x - 0,4x) = 5,4486
4 36/1000(х - 15/100 - 4/10х) = 5 4486/10000
4036/1000(х - 15/100 - 4/10х) = 54486/10000
х - 15/100 - 4/10х = 54486/10000 : 4036/1000
х - 15/100 - 4/10х = 54486/10000 * 1000/4036
х - 15/100 - 4/10х = 1000/10000 * 54486/4036
х - 15/100 - 4/10х = 1/10 * 27243/2018
х - 15/100 - 4/10х = 27243/20180
х - 4/10х = 27243/20180 + 15/100
х - 4/10х = 272430/201800 + 302700/201800
х - 4/10х = (272430 + 302700)/201800
х - 4/10х = 57513/20180
x(1 - 4/10) = 57513/20180
x(10/10 - 4/10) = 57513/20180
x(10 - 4)/10 = 57513/20180
6/10x = 57513/20180
3/5x = 57513/20180
x = 57513/20180 : 3/5
x = 57513/20180 * 5/3
x = 19171/3 * 1/4036
x = 19171/(3 * 4036)
x = 19171/12108
x = 1 7063/12108


Ответ: 1 7063/12108