Add 42/2 and 81/21
1st number: 21 0/2, 2nd number: 3 18/21
42/2 + 81/21 is 174/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
42/2 = 42 × 21/2 × 21 = 882/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
81/21 = 81 × 2/21 × 2 = 162/42 - Add the two like fractions:
882/42 + 162/42 = 882 + 162/42 = 1044/42 - 1044/42 simplified gives 174/7
- So, 42/2 + 81/21 = 174/7
In mixed form: 246/7
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