Add 15/4 and 72/20
1st number: 3 3/4, 2nd number: 3 12/20
15/4 + 72/20 is 147/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
15/4 = 15 × 5/4 × 5 = 75/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
72/20 = 72 × 1/20 × 1 = 72/20 - Add the two like fractions:
75/20 + 72/20 = 75 + 72/20 = 147/20 - So, 15/4 + 72/20 = 147/20
In mixed form: 77/20
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