Add 5/8 and 21/30
5/8 + 21/30 is 53/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 8 × 15 = 120,
5/8 = 5 × 15/8 × 15 = 75/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
21/30 = 21 × 4/30 × 4 = 84/120 - Add the two like fractions:
75/120 + 84/120 = 75 + 84/120 = 159/120 - 159/120 simplified gives 53/40
- So, 5/8 + 21/30 = 53/40
In mixed form: 113/40
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