Add 9/40 and 21/98
9/40 + 21/98 is 123/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 98 is 1960
Next, find the equivalent fraction of both fractional numbers with denominator 1960 - For the 1st fraction, since 40 × 49 = 1960,
9/40 = 9 × 49/40 × 49 = 441/1960 - Likewise, for the 2nd fraction, since 98 × 20 = 1960,
21/98 = 21 × 20/98 × 20 = 420/1960 - Add the two like fractions:
441/1960 + 420/1960 = 441 + 420/1960 = 861/1960 - 861/1960 simplified gives 123/280
- So, 9/40 + 21/98 = 123/280
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