1/6(1,2m-6,6)-3/7(2,1m-3,5)
1/6(6/5m-33/5)-3/7(21/10m-7/2)
1/5m-11/10-9/10m+3/2
-7/10m+2/5
Подставляем m=-8
-7/10*(-8)+2/5
7/5*4+2/5
28/5+2/5
6
1/6(1,2m-6,6)-3/7(2,1m-3,5)
1/6(6/5m-33/5)-3/7(21/10m-7/2)
1/5m-11/10-9/10m+3/2
-7/10m+2/5
Подставляем m=-8
-7/10*(-8)+2/5
7/5*4+2/5
28/5+2/5
6