Solutions by everydaycalculation.com

1^{st} number: 1 1/3, 2^{nd} number: 3/7

43 - 37 is 1921.

- Find the least common denominator or LCM of the two denominators:

LCM of 3 and 7 is**21**

Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,

43 = 4 × 73 × 7 = 2821 - Likewise, for the 2nd fraction, since 7 × 3 = 21,

37 = 3 × 37 × 3 = 921 - Subtract the two like fractions:

2821 - 921 = 28 - 921 = 1921

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