Solutions by everydaycalculation.com

221 - 2460 is -32105.

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

LCM of 21 and 60 is**420**

Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,

221 = 2 × 2021 × 20 = 40420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,

2460 = 24 × 760 × 7 = 168420 - Subtract the two like fractions:

40420 - 168420 = 40 - 168420 = -128420 - After reducing the fraction, the answer is -32105

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