Solutions by everydaycalculation.com
21212122 is already in the simplest form. It can be written as 0.999529 in decimal form (rounded to 6 decimal places).
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Equivalent fractions: 4242/4244 6363/6366
More fractions: 4242/2122 2121/4244 6363/2122 2121/6366 2122/2122 2121/21232120/2122 2121/2121
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