Add 72/10 and 21/9
1st number: 7 2/10, 2nd number: 2 3/9
72/10 + 21/9 is 143/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 9 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 9 × 10 = 90,
21/9 = 21 × 10/9 × 10 = 210/90 - Add the two like fractions:
648/90 + 210/90 = 648 + 210/90 = 858/90 - 858/90 simplified gives 143/15
- So, 72/10 + 21/9 = 143/15
In mixed form: 98/15
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