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The common denominator of 1/11 and 1/9 is ..............., The sum of 1/11 and 1/9 is 20/99. The difference of 1/9 and 1/11 is ..............., 21/99 is equal to the fraction ..........., 0.2 expressed
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The common denominator of 1/11 and 1/9 is ..............., The sum of 1/11 and 1/9 is 20/99. The difference of 1/9 and 1/11 is ..............., 21/99 is equal to the fraction ..........., 0.2 expressed as a percentage is .........​

User Danlooo
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The common denominator of 1/11 and 1/9 is 99; the sum of 1/11 and 1/9 is 20/99; the difference of 1/9 and 1/11 is 2/99; 21/99 is equal to the fraction 7/33; 0.2 expressed as a percentage is 20%
User Djam
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