Add 72/10 and 21/18
1st number: 7 2/10, 2nd number: 1 3/18
72/10 + 21/18 is 251/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
72/10 = 72 × 9/10 × 9 = 648/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
21/18 = 21 × 5/18 × 5 = 105/90 - Add the two like fractions:
648/90 + 105/90 = 648 + 105/90 = 753/90 - 753/90 simplified gives 251/30
- So, 72/10 + 21/18 = 251/30
In mixed form: 811/30
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