Subtract 21/80 from 10/98
10/98 - 21/80 is -629/3920.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 80 is 3920
Next, find the equivalent fraction of both fractional numbers with denominator 3920 - For the 1st fraction, since 98 × 40 = 3920,
10/98 = 10 × 40/98 × 40 = 400/3920 - Likewise, for the 2nd fraction, since 80 × 49 = 3920,
21/80 = 21 × 49/80 × 49 = 1029/3920 - Subtract the two like fractions:
400/3920 - 1029/3920 = 400 - 1029/3920 = -629/3920
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