Add 21/16 and 30/18
1st number: 1 5/16, 2nd number: 1 12/18
21/16 + 30/18 is 143/48.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 18 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 16 × 9 = 144,
21/16 = 21 × 9/16 × 9 = 189/144 - Likewise, for the 2nd fraction, since 18 × 8 = 144,
30/18 = 30 × 8/18 × 8 = 240/144 - Add the two like fractions:
189/144 + 240/144 = 189 + 240/144 = 429/144 - 429/144 simplified gives 143/48
- So, 21/16 + 30/18 = 143/48
In mixed form: 247/48
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