Add 21/98 and 20/80
21/98 + 20/80 is 13/28.
Steps for adding 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,
20/80 = 20 × 49/80 × 49 = 980/3920 - Add the two like fractions:
840/3920 + 980/3920 = 840 + 980/3920 = 1820/3920 - 1820/3920 simplified gives 13/28
- So, 21/98 + 20/80 = 13/28
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