решите уравнение а)5/16:z=3/4 б)1 1/9m+5/6=1 1/2 в)8/15y-3/10y+3/5y=1/2

А) 5/16:z = 3/4
z = 5/16 : 3/4
z = 5/16 * 4/3
z= 5/12

б) 1 1/9m + 5/6 = 1 1/2
1 1/9 m = 1 1/2 - 5/6
1 1/9 m = 1 6/12 - 10/12
1 1/9m = 8/12 = 2/3
m = 2/3 : 10/9
m = 2/3 * 9/10
m = 3/5

8/15y - 3/10y +3/5y = 1/2
16/30y - 9/30y + 18/30y = 1/2
25/30y = 1/2
5/6y = 1/2
y = 1/2 : 5/6
y= 1/2 * 6/5
y = 3/5