Add 21/98 and 15/20
21/98 + 15/20 is 27/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 20 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 98 × 10 = 980,
21/98 = 21 × 10/98 × 10 = 210/980 - Likewise, for the 2nd fraction, since 20 × 49 = 980,
15/20 = 15 × 49/20 × 49 = 735/980 - Add the two like fractions:
210/980 + 735/980 = 210 + 735/980 = 945/980 - 945/980 simplified gives 27/28
- So, 21/98 + 15/20 = 27/28
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