Add 21/60 and 28/49
21/60 + 28/49 is 129/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 49 is 2940
Next, find the equivalent fraction of both fractional numbers with denominator 2940 - For the 1st fraction, since 60 × 49 = 2940,
21/60 = 21 × 49/60 × 49 = 1029/2940 - Likewise, for the 2nd fraction, since 49 × 60 = 2940,
28/49 = 28 × 60/49 × 60 = 1680/2940 - Add the two like fractions:
1029/2940 + 1680/2940 = 1029 + 1680/2940 = 2709/2940 - 2709/2940 simplified gives 129/140
- So, 21/60 + 28/49 = 129/140
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