Среди данных уравнений укажите равносильные:

    а) 3х = 12;     b) х + 9 = 12;     с) 32 : x = 8;     d) 15 – х = 10.


A) a, b;

B) c, d;

C) b, c;

D) a, c;  

E) a, d.

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