Add 81/2 and 30/40
1st number: 40 1/2, 2nd number: 30/40
81/2 + 30/40 is 165/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 2 × 20 = 40,
81/2 = 81 × 20/2 × 20 = 1620/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
30/40 = 30 × 1/40 × 1 = 30/40 - Add the two like fractions:
1620/40 + 30/40 = 1620 + 30/40 = 1650/40 - 1650/40 simplified gives 165/4
- So, 81/2 + 30/40 = 165/4
In mixed form: 411/4
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