1.2-(1.1/4-(x-4)=2.1 помогите решить)

-(1,1/4-(х-4))=2.1-1.2 -1.1/4+(х-4)=0.9 -1.25+(х-4)=0.9 Х-4=0,9+1.25=1.125 Х=1.125+4=5.125