Solutions by everydaycalculation.com

542 - 1227 is -41126.

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

LCM of 42 and 27 is**378** - For the 1st fraction, since 42 × 9 = 378,

542 = 5 × 942 × 9 = 45378 - Likewise, for the 2nd fraction, since 27 × 14 = 378,

1227 = 12 × 1427 × 14 = 168378 - Subtract the two fractions:

45378 - 168378 = 45 - 168378 = -123378 - After reducing the fraction, the answer is -41126

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