Add 21/40 and 54/98
21/40 + 54/98 is 2109/1960.
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,
21/40 = 21 × 49/40 × 49 = 1029/1960 - Likewise, for the 2nd fraction, since 98 × 20 = 1960,
54/98 = 54 × 20/98 × 20 = 1080/1960 - Add the two like fractions:
1029/1960 + 1080/1960 = 1029 + 1080/1960 = 2109/1960 - So, 21/40 + 54/98 = 2109/1960
In mixed form: 1149/1960
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