Subtract 20/49 from 15/56
15/56 - 20/49 is -55/392.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 49 is 392
Next, find the equivalent fraction of both fractional numbers with denominator 392 - For the 1st fraction, since 56 × 7 = 392,
15/56 = 15 × 7/56 × 7 = 105/392 - Likewise, for the 2nd fraction, since 49 × 8 = 392,
20/49 = 20 × 8/49 × 8 = 160/392 - Subtract the two like fractions:
105/392 - 160/392 = 105 - 160/392 = -55/392
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