Add 21/18 and 28/16
1st number: 1 3/18, 2nd number: 1 12/16
21/18 + 28/16 is 35/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 16 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 18 × 8 = 144,
21/18 = 21 × 8/18 × 8 = 168/144 - Likewise, for the 2nd fraction, since 16 × 9 = 144,
28/16 = 28 × 9/16 × 9 = 252/144 - Add the two like fractions:
168/144 + 252/144 = 168 + 252/144 = 420/144 - 420/144 simplified gives 35/12
- So, 21/18 + 28/16 = 35/12
In mixed form: 211/12
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