1целое 5/11: (3/5x-6/25)=2целых2/5 уравнение

1 5/11 : (3/5х - 6/25) = 2 2/5,
3/5х - 6/25 = 1 5/11 : 2 2/5,
3/5х - 6/25 = 16/11 : 12/5,
3/5х - 6/25 = 16/11 * 5/12,
3/5х - 6/25 = 20/33,
3/5х = 20/33 + 6/25,
3/5х = 500/825 + 198/825,
3/5х = 698/825,
х = 698/825 : 3/5,
х = 698/825 * 5/3,
х = 698/495,
х = 1 203/495