Add 28/12 and 21/18
1st number: 2 4/12, 2nd number: 1 3/18
28/12 + 21/18 is 7/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
28/12 = 28 × 3/12 × 3 = 84/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
21/18 = 21 × 2/18 × 2 = 42/36 - Add the two like fractions:
84/36 + 42/36 = 84 + 42/36 = 126/36 - 126/36 simplified gives 7/2
- So, 28/12 + 21/18 = 7/2
In mixed form: 31/2
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