14-72:(D-3)=8,d≠3
14-72:D-3=8
-72:D-3=8-14
-72:D-3=-6
72=(D-3)×6
72=6D-18
-6D=-18-72
-6D=-90
D=15,D≠3
D=15
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Answers & Comments
14-72:(D-3)=8,d≠3
14-72:D-3=8
-72:D-3=8-14
-72:D-3=-6
72=(D-3)×6
72=6D-18
-6D=-18-72
-6D=-90
D=15,D≠3
D=15