Solutions by everydaycalculation.com

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

23 - 97 is -1321.

- 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,

23 = 2 × 73 × 7 = 1421 - Likewise, for the 2nd fraction, since 7 × 3 = 21,

97 = 9 × 37 × 3 = 2721 - Subtract the two like fractions:

1421 - 2721 = 14 - 2721 = -1321

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