Add 28/30 and 81/40
1st number: 28/30, 2nd number: 2 1/40
28/30 + 81/40 is 71/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
28/30 = 28 × 4/30 × 4 = 112/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
81/40 = 81 × 3/40 × 3 = 243/120 - Add the two like fractions:
112/120 + 243/120 = 112 + 243/120 = 355/120 - 355/120 simplified gives 71/24
- So, 28/30 + 81/40 = 71/24
In mixed form: 223/24
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