Add 7/28 and 12/15
7/28 + 12/15 is 21/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 28 × 15 = 420,
7/28 = 7 × 15/28 × 15 = 105/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
12/15 = 12 × 28/15 × 28 = 336/420 - Add the two like fractions:
105/420 + 336/420 = 105 + 336/420 = 441/420 - 441/420 simplified gives 21/20
- So, 7/28 + 12/15 = 21/20
In mixed form: 11/20
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