Add 21/5 and 42/10
1st number: 4 1/5, 2nd number: 4 2/10
21/5 + 42/10 is 42/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 10 is 10
Next, find the equivalent fraction of both fractional numbers with denominator 10 - For the 1st fraction, since 5 × 2 = 10,
21/5 = 21 × 2/5 × 2 = 42/10 - Likewise, for the 2nd fraction, since 10 × 1 = 10,
42/10 = 42 × 1/10 × 1 = 42/10 - Add the two like fractions:
42/10 + 42/10 = 42 + 42/10 = 84/10 - 84/10 simplified gives 42/5
- So, 21/5 + 42/10 = 42/5
In mixed form: 82/5
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