Subtract 98/30 from 21/40
1st number: 21/40, 2nd number: 3 8/30
21/40 - 98/30 is -329/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
21/40 = 21 × 3/40 × 3 = 63/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
98/30 = 98 × 4/30 × 4 = 392/120 - Subtract the two like fractions:
63/120 - 392/120 = 63 - 392/120 = -329/120
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