(Х-1 1/3 ): 1 5/12= 4/51
Х - (3•1+1)/3 = 4/51 • 1 5/12
Х- 4/3= 4/51• (12•1+5)/12
Х- 4/3= 4/51• 17/12
Х-4/3= 1/3• 1/3
Х- 4/3= 1/9
Х= 1/9+ 4/3
Х= 1/9+ (4•3)/(3•3)
Х= 1/9+ 12/9
Х= 13/9
Х= 1 4/9
Проверка
( 1 4/9- 1 1/3): 1 5/12= 4/51
(1 4/9- 1 (1•3)/(3•3)) :(1•12+5)/12= 4/51
(1 4/9- 1 3/9): 17/12= 4/51
1/9• 12/17= 4/51
1/3• 4/17=4/51
4/51=4/51