канечно 14\15 а не ноль понятно
A) x=3 8/9- 1 5/9
x=2 3/9 = 2 1/3
b) y- 8 12/19 = 5 21/19 - 1 7/19
y-8 12/19=4 14/19
y=4 14/19+ 8 12/19
y=12 28/19
y=13 9/19
5/6 + 3_2/9 - 1/18 = 15/18 + 3_4/18 - 1/18 = 3_19/18 - 1/18 = 3_18/18 = 4
4010-106*150/300=
106*150=15900
15900/300=53
4010-53=3957