Add 21/8 and 54/60
1st number: 2 5/8, 2nd number: 54/60
21/8 + 54/60 is 141/40.
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,
21/8 = 21 × 15/8 × 15 = 315/120 - Likewise, for the 2nd fraction, since 60 × 2 = 120,
54/60 = 54 × 2/60 × 2 = 108/120 - Add the two like fractions:
315/120 + 108/120 = 315 + 108/120 = 423/120 - 423/120 simplified gives 141/40
- So, 21/8 + 54/60 = 141/40
In mixed form: 321/40
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