Add 12/30 and 21/8
1st number: 12/30, 2nd number: 2 5/8
12/30 + 21/8 is 121/40.
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,
12/30 = 12 × 4/30 × 4 = 48/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
21/8 = 21 × 15/8 × 15 = 315/120 - Add the two like fractions:
48/120 + 315/120 = 48 + 315/120 = 363/120 - 363/120 simplified gives 121/40
- So, 12/30 + 21/8 = 121/40
In mixed form: 31/40
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