Add 12/8 and 9/15
1st number: 1 4/8, 2nd number: 9/15
12/8 + 9/15 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 8 × 15 = 120,
12/8 = 12 × 15/8 × 15 = 180/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
9/15 = 9 × 8/15 × 8 = 72/120 - Add the two like fractions:
180/120 + 72/120 = 180 + 72/120 = 252/120 - 252/120 simplified gives 21/10
- So, 12/8 + 9/15 = 21/10
In mixed form: 21/10
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