Add 21/28 and 15/16
21/28 + 15/16 is 27/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 16 is 112
Next, find the equivalent fraction of both fractional numbers with denominator 112 - For the 1st fraction, since 28 × 4 = 112,
21/28 = 21 × 4/28 × 4 = 84/112 - Likewise, for the 2nd fraction, since 16 × 7 = 112,
15/16 = 15 × 7/16 × 7 = 105/112 - Add the two like fractions:
84/112 + 105/112 = 84 + 105/112 = 189/112 - 189/112 simplified gives 27/16
- So, 21/28 + 15/16 = 27/16
In mixed form: 111/16
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