Add 12/28 and 81/60
1st number: 12/28, 2nd number: 1 21/60
12/28 + 81/60 is 249/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
12/28 = 12 × 15/28 × 15 = 180/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
81/60 = 81 × 7/60 × 7 = 567/420 - Add the two like fractions:
180/420 + 567/420 = 180 + 567/420 = 747/420 - 747/420 simplified gives 249/140
- So, 12/28 + 81/60 = 249/140
In mixed form: 1109/140
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