-5/7-(m-1)=11/14

-5/7-m+1=11/14

2/7-m=11/14

m=2/7-11/14

m= 4/14-11/14

m=-7/14=-1/2
---
15/6-(у+2/3)
y+2/3=1 5/6-1 1/2
y+2/3=1 5/6-1 3/6
y+2/3=2/6
y+2/3=1/3
y=1/3-2/3
y=1/3