Add 72/20 and 7/40
1st number: 3 12/20, 2nd number: 7/40
72/20 + 7/40 is 151/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
72/20 = 72 × 2/20 × 2 = 144/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
7/40 = 7 × 1/40 × 1 = 7/40 - Add the two like fractions:
144/40 + 7/40 = 144 + 7/40 = 151/40 - So, 72/20 + 7/40 = 151/40
In mixed form: 331/40
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