Add 21/35 and 9/7
1st number: 21/35, 2nd number: 1 2/7
21/35 + 9/7 is 66/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 7 is 35
Next, find the equivalent fraction of both fractional numbers with denominator 35 - For the 1st fraction, since 35 × 1 = 35,
21/35 = 21 × 1/35 × 1 = 21/35 - Likewise, for the 2nd fraction, since 7 × 5 = 35,
9/7 = 9 × 5/7 × 5 = 45/35 - Add the two like fractions:
21/35 + 45/35 = 21 + 45/35 = 66/35 - So, 21/35 + 9/7 = 66/35
In mixed form: 131/35
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