Add 81/30 and 30/8
1st number: 2 21/30, 2nd number: 3 6/8
81/30 + 30/8 is 129/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
81/30 = 81 × 4/30 × 4 = 324/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
30/8 = 30 × 15/8 × 15 = 450/120 - Add the two like fractions:
324/120 + 450/120 = 324 + 450/120 = 774/120 - 774/120 simplified gives 129/20
- So, 81/30 + 30/8 = 129/20
In mixed form: 69/20
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