Add 72/20 and 7/4
1st number: 3 12/20, 2nd number: 1 3/4
72/20 + 7/4 is 107/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 4 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
72/20 = 72 × 1/20 × 1 = 72/20 - Likewise, for the 2nd fraction, since 4 × 5 = 20,
7/4 = 7 × 5/4 × 5 = 35/20 - Add the two like fractions:
72/20 + 35/20 = 72 + 35/20 = 107/20 - So, 72/20 + 7/4 = 107/20
In mixed form: 57/20
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