Add 21/9 and 42/5
1st number: 2 3/9, 2nd number: 8 2/5
21/9 + 42/5 is 161/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 5 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 9 × 5 = 45,
21/9 = 21 × 5/9 × 5 = 105/45 - Likewise, for the 2nd fraction, since 5 × 9 = 45,
42/5 = 42 × 9/5 × 9 = 378/45 - Add the two like fractions:
105/45 + 378/45 = 105 + 378/45 = 483/45 - 483/45 simplified gives 161/15
- So, 21/9 + 42/5 = 161/15
In mixed form: 1011/15
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