Solutions by everydaycalculation.com

221 - 2154 is -37126.

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

LCM of 21 and 54 is**378**

Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 21 × 18 = 378,

221 = 2 × 1821 × 18 = 36378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,

2154 = 21 × 754 × 7 = 147378 - Subtract the two like fractions:

36378 - 147378 = 36 - 147378 = -111378 - After reducing the fraction, the answer is -37126

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