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Find number abc

If 9a8bb - cbb8b = a5ac0 find number abc. Multiple solutions may exist.

Correct answers: 25

The first user who solved this task is Djordje Timotijevic.

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Albert C. Gilbert

Died 24 Jan 1961 at age 76 (born 15 Feb 1884).Albert Carlton Gilbert was an American inventor who patented the Erector set after he founded the A.C. Gilbert Co. New Haven, Connecticut (1908) to manufacture boxed magic sets. In 1913, he introduced Erector Sets. Similar construction toys then existed, such as Hornby's Meccano set made in England. Meccano sets included pulleys, gears, and several 1/2" wide strips of varying length with holes evenly spaced on them. Gilbert needed something unique for his Erector sets, so he created the square girder, made using several 1" wide strips with triangles cut in them. These had their edges bent over so 4 strips could be screwed together to form a very sturdy square girder. Over the next 40 years, some 30 million Erector Sets were sold.«

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