bazilchik1997 -5/7-(m-1)=11/14
1-m=11/14+10/14
1-m=21/14
1-m=3/2
1-m=1,5
-m=0,5
m=-0,5


1ц5/6-(у+2/3)=1ц1/2
11/6-у-2/3=3/2
11/6-4/6-у=3/2
7/6-у=з/2
-у=3/2-7/6
-у=9/6-7/6
-у=2/6
у=-1/3