Add 42/5 and 21/10
1st number: 8 2/5, 2nd number: 2 1/10
42/5 + 21/10 is 21/2.
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,
42/5 = 42 × 2/5 × 2 = 84/10 - Likewise, for the 2nd fraction, since 10 × 1 = 10,
21/10 = 21 × 1/10 × 1 = 21/10 - Add the two like fractions:
84/10 + 21/10 = 84 + 21/10 = 105/10 - 105/10 simplified gives 21/2
- So, 42/5 + 21/10 = 21/2
In mixed form: 101/2
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