Add 30/80 and 81/40
1st number: 30/80, 2nd number: 2 1/40
30/80 + 81/40 is 12/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 40 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
30/80 = 30 × 1/80 × 1 = 30/80 - Likewise, for the 2nd fraction, since 40 × 2 = 80,
81/40 = 81 × 2/40 × 2 = 162/80 - Add the two like fractions:
30/80 + 162/80 = 30 + 162/80 = 192/80 - 192/80 simplified gives 12/5
- So, 30/80 + 81/40 = 12/5
In mixed form: 22/5
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