Add 28/8 and 81/30
1st number: 3 4/8, 2nd number: 2 21/30
28/8 + 81/30 is 31/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 8 × 15 = 120,
28/8 = 28 × 15/8 × 15 = 420/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
81/30 = 81 × 4/30 × 4 = 324/120 - Add the two like fractions:
420/120 + 324/120 = 420 + 324/120 = 744/120 - 744/120 simplified gives 31/5
- So, 28/8 + 81/30 = 31/5
In mixed form: 61/5
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