Помогите с уравнением.
6/7z - 1/5 = 3/4 : 3/4 6/7z - 1/5 = 1 6/7z = 1 + 1/5 6/7z = 1 1/5 6/7z = 6/5 z = 6/5 : 6/7 z = 7/5 z = 1целая 2/5