Add 15/12 and 28/7
1st number: 1 3/12, 2nd number: 4 0/7
15/12 + 28/7 is 21/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
15/12 = 15 × 7/12 × 7 = 105/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
28/7 = 28 × 12/7 × 12 = 336/84 - Add the two like fractions:
105/84 + 336/84 = 105 + 336/84 = 441/84 - 441/84 simplified gives 21/4
- So, 15/12 + 28/7 = 21/4
In mixed form: 51/4
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