Subtract 42/56 from 4/81
4/81 - 42/56 is -227/324.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 56 is 4536
Next, find the equivalent fraction of both fractional numbers with denominator 4536 - For the 1st fraction, since 81 × 56 = 4536,
4/81 = 4 × 56/81 × 56 = 224/4536 - Likewise, for the 2nd fraction, since 56 × 81 = 4536,
42/56 = 42 × 81/56 × 81 = 3402/4536 - Subtract the two like fractions:
224/4536 - 3402/4536 = 224 - 3402/4536 = -3178/4536 - After reducing the fraction, the answer is -227/324
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