-7/8 m -1 если m =-1 m= 4/7 m= -0,56

m=-1 , -7/8.(-1)-1=7/8-1=-1/8m=4/7, -7/8.(4/7)=-1/2m=-0,56, -7/8.(-0,56)=-7/1 .(-0,07)=+7.0,07=0,49