Add 81/30 and 12/8
1st number: 2 21/30, 2nd number: 1 4/8
81/30 + 12/8 is 21/5.
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,
12/8 = 12 × 15/8 × 15 = 180/120 - Add the two like fractions:
324/120 + 180/120 = 324 + 180/120 = 504/120 - 504/120 simplified gives 21/5
- So, 81/30 + 12/8 = 21/5
In mixed form: 41/5
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