Add 21/10 and 18/12
1st number: 2 1/10, 2nd number: 1 6/12
21/10 + 18/12 is 18/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 10 × 6 = 60,
21/10 = 21 × 6/10 × 6 = 126/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
18/12 = 18 × 5/12 × 5 = 90/60 - Add the two like fractions:
126/60 + 90/60 = 126 + 90/60 = 216/60 - 216/60 simplified gives 18/5
- So, 21/10 + 18/12 = 18/5
In mixed form: 33/5
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