Subtract 81/35 from 28/63
1st number: 28/63, 2nd number: 2 11/35
28/63 - 81/35 is -589/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 35 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
28/63 = 28 × 5/63 × 5 = 140/315 - Likewise, for the 2nd fraction, since 35 × 9 = 315,
81/35 = 81 × 9/35 × 9 = 729/315 - Subtract the two like fractions:
140/315 - 729/315 = 140 - 729/315 = -589/315
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