Add 15/8 and 21/60
1st number: 1 7/8, 2nd number: 21/60
15/8 + 21/60 is 89/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 60 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 8 × 15 = 120,
15/8 = 15 × 15/8 × 15 = 225/120 - Likewise, for the 2nd fraction, since 60 × 2 = 120,
21/60 = 21 × 2/60 × 2 = 42/120 - Add the two like fractions:
225/120 + 42/120 = 225 + 42/120 = 267/120 - 267/120 simplified gives 89/40
- So, 15/8 + 21/60 = 89/40
In mixed form: 29/40
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