Subtract 4/80 from 21/98
21/98 - 4/80 is 23/140.
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,
21/98 = 21 × 40/98 × 40 = 840/3920 - Likewise, for the 2nd fraction, since 80 × 49 = 3920,
4/80 = 4 × 49/80 × 49 = 196/3920 - Subtract the two like fractions:
840/3920 - 196/3920 = 840 - 196/3920 = 644/3920 - After reducing the fraction, the answer is 23/140
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