Add 21/3 and 7/5
1st number: 7 0/3, 2nd number: 1 2/5
21/3 + 7/5 is 42/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 5 is 15
Next, find the equivalent fraction of both fractional numbers with denominator 15 - For the 1st fraction, since 3 × 5 = 15,
21/3 = 21 × 5/3 × 5 = 105/15 - Likewise, for the 2nd fraction, since 5 × 3 = 15,
7/5 = 7 × 3/5 × 3 = 21/15 - Add the two like fractions:
105/15 + 21/15 = 105 + 21/15 = 126/15 - 126/15 simplified gives 42/5
- So, 21/3 + 7/5 = 42/5
In mixed form: 82/5
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