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The least common multiple of four, twenty eight, and twenty is 140.
To compare the sizes of fractions, we need to find a common denominator. In this case, the least common multiple of 5 and 20 is 20. Converting four fifths to have a denominator of 20, we get 16/20. Comparing 16/20 to 17/20, we see that 17/20 is bigger than 16/20. Therefore, seventeen twentieths is bigger than four fifths.
Seven to the negative four power equals 0.00041649312
No! The fraction seven eighths is bigger than the fraction four fifths.
40