Add 21/30 and 35/60
21/30 + 35/60 is 77/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 60 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
21/30 = 21 × 2/30 × 2 = 42/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
35/60 = 35 × 1/60 × 1 = 35/60 - Add the two like fractions:
42/60 + 35/60 = 42 + 35/60 = 77/60 - So, 21/30 + 35/60 = 77/60
In mixed form: 117/60
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