Add 7/20 and 21/98
7/20 + 21/98 is 79/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 98 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 20 × 49 = 980,
7/20 = 7 × 49/20 × 49 = 343/980 - Likewise, for the 2nd fraction, since 98 × 10 = 980,
21/98 = 21 × 10/98 × 10 = 210/980 - Add the two like fractions:
343/980 + 210/980 = 343 + 210/980 = 553/980 - 553/980 simplified gives 79/140
- So, 7/20 + 21/98 = 79/140
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