Add 21/16 and 18/12
1st number: 1 5/16, 2nd number: 1 6/12
21/16 + 18/12 is 45/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 12 is 48
Next, find the equivalent fraction of both fractional numbers with denominator 48 - For the 1st fraction, since 16 × 3 = 48,
21/16 = 21 × 3/16 × 3 = 63/48 - Likewise, for the 2nd fraction, since 12 × 4 = 48,
18/12 = 18 × 4/12 × 4 = 72/48 - Add the two like fractions:
63/48 + 72/48 = 63 + 72/48 = 135/48 - 135/48 simplified gives 45/16
- So, 21/16 + 18/12 = 45/16
In mixed form: 213/16
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