Subtract 21/15 from 15/56
1st number: 15/56, 2nd number: 1 6/15
15/56 - 21/15 is -317/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 15 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 56 × 15 = 840,
15/56 = 15 × 15/56 × 15 = 225/840 - Likewise, for the 2nd fraction, since 15 × 56 = 840,
21/15 = 21 × 56/15 × 56 = 1176/840 - Subtract the two like fractions:
225/840 - 1176/840 = 225 - 1176/840 = -951/840 - After reducing the fraction, the answer is -317/280
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