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Let Delta1=|{:(a1,a2,a3),(b1,b2,b3),(c1,...

Let `Delta_1=|{:(a_1,a_2,a_3),(b_1,b_2,b_3),(c_1,c_2,c_3):}| , Delta_2=|{:(6a_,1,2a_2,2a_3),(3b_1,b_2,b_3),(12c_1, 4c_2,4c_3):}|` and `Delta_3=|{:(3a_1+b_1 , 3a_2+b_2 , 3a_3+b_3),(3b_1,3b_2,3b_3),(3c_1,3c_2,3c_3):}|`
then `Delta_3-Delta_2=kDelta_1`, find k.

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