Add 72/10 and 21/30
1st number: 7 2/10, 2nd number: 21/30
72/10 + 21/30 is 79/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
72/10 = 72 × 3/10 × 3 = 216/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
21/30 = 21 × 1/30 × 1 = 21/30 - Add the two like fractions:
216/30 + 21/30 = 216 + 21/30 = 237/30 - 237/30 simplified gives 79/10
- So, 72/10 + 21/30 = 79/10
In mixed form: 79/10
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