The greatest common denominator of any set of denominators is infinite.
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You can divide both 63 and 99 by 3.If you you divide 99 by 3 it will be 33.If you divide 63 by 3 it will be 23.
For a greatest common factor of 33, the number 66 (2 x 33) would be a smaller multiple than 99 (3 x 33).
To express 0.21 with the 21 repeating as a fraction, we can set x = 0.21, and then multiply x by 100 to shift the decimal two places to the right, resulting in 100x = 21.21. Subtracting x from 100x gives 99x = 21, and dividing both sides by 99 simplifies the fraction to 21/99. Finally, simplifying this fraction by dividing both numerator and denominator by their greatest common factor, which is 3, results in the fraction 7/33.
greatest two digit number is 99. smallest whole number is 0 there fore 99-0=99
99