Subtract 15/8 from 81/49
1st number: 1 32/49, 2nd number: 1 7/8
81/49 - 15/8 is -87/392.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 8 is 392
Next, find the equivalent fraction of both fractional numbers with denominator 392 - For the 1st fraction, since 49 × 8 = 392,
81/49 = 81 × 8/49 × 8 = 648/392 - Likewise, for the 2nd fraction, since 8 × 49 = 392,
15/8 = 15 × 49/8 × 49 = 735/392 - Subtract the two like fractions:
648/392 - 735/392 = 648 - 735/392 = -87/392
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