Add 10/42 and 81/21
1st number: 10/42, 2nd number: 3 18/21
10/42 + 81/21 is 86/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
10/42 = 10 × 1/42 × 1 = 10/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
81/21 = 81 × 2/21 × 2 = 162/42 - Add the two like fractions:
10/42 + 162/42 = 10 + 162/42 = 172/42 - 172/42 simplified gives 86/21
- So, 10/42 + 81/21 = 86/21
In mixed form: 42/21
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