Как правильно делить столбиком 752:2

<span>AB=BC=CD=DE=EF = x</span>

<span>AD:DF</span>

<span>AD = AB+BC+CD = 3x, DF=DE+EF = 2x => AD:DF = 3x:2x = 3:2</span>

<span>AC:AF</span>

<span>AC = AB+BC = 2x, AF=AB+BC+CD+DE+EF = 5x => AC:AF = 2:5</span>

<span>BD:CE</span>

<span>BD = BC+CD = 2x, CE = CD+DE = 2x => BD:CE = 1:1</span>

<span>BF:BD </span>

<span>BF = BC+CD+DE+EF = 4x, BD = BC+CD = 2x => BF:BD = 4:2 = 2:1</span>