Add 21/12 and 72/10
1st number: 1 9/12, 2nd number: 7 2/10
21/12 + 72/10 is 179/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 10 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
21/12 = 21 × 5/12 × 5 = 105/60 - Likewise, for the 2nd fraction, since 10 × 6 = 60,
72/10 = 72 × 6/10 × 6 = 432/60 - Add the two like fractions:
105/60 + 432/60 = 105 + 432/60 = 537/60 - 537/60 simplified gives 179/20
- So, 21/12 + 72/10 = 179/20
In mixed form: 819/20
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