Subtract 56/48 from 15/42
1st number: 15/42, 2nd number: 1 8/48
15/42 - 56/48 is -17/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 42 × 8 = 336,
15/42 = 15 × 8/42 × 8 = 120/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
56/48 = 56 × 7/48 × 7 = 392/336 - Subtract the two like fractions:
120/336 - 392/336 = 120 - 392/336 = -272/336 - After reducing the fraction, the answer is -17/21
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