Find number abc
If 7b13a - bb6a5 = a9ac9 find number abc. Multiple solutions may exist.Correct answers: 0
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Lars Fredrik NilsonBorn 27 May 1840; died 14 May 1899 at age 58.Chemist who discovered (1879) the oxide of scandium, scandia, in the rare-earth minerals gadolinite and euxenite. The existence of the element had been predicted by Dmitry Ivanovich Mendeleyev (1871) who tentatively called it ekaboron. |