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Verified answer
VektorKelas X
C = [3A + 2B] / [3 + 2]
C = [ 3(4 , 4 , -3) + 2(4 , -6 , 12) ] / 5
C = [ (12 , 12 , -9) + (8 , -12 , 24) ] / 5
C = (20 , 0 , 15) / 5
C = (4 , 0 , 3)