Add 81/20 and 9/40
1st number: 4 1/20, 2nd number: 9/40
81/20 + 9/40 is 171/40.
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,
81/20 = 81 × 2/20 × 2 = 162/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
9/40 = 9 × 1/40 × 1 = 9/40 - Add the two like fractions:
162/40 + 9/40 = 162 + 9/40 = 171/40 - So, 81/20 + 9/40 = 171/40
In mixed form: 411/40
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