Add 72/15 and 28/20
1st number: 4 12/15, 2nd number: 1 8/20
72/15 + 28/20 is 31/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
72/15 = 72 × 4/15 × 4 = 288/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
28/20 = 28 × 3/20 × 3 = 84/60 - Add the two like fractions:
288/60 + 84/60 = 288 + 84/60 = 372/60 - 372/60 simplified gives 31/5
- So, 72/15 + 28/20 = 31/5
In mixed form: 61/5
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