Add 81/42 and 25/18
1st number: 1 39/42, 2nd number: 1 7/18
81/42 + 25/18 is 209/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
81/42 = 81 × 3/42 × 3 = 243/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
25/18 = 25 × 7/18 × 7 = 175/126 - Add the two like fractions:
243/126 + 175/126 = 243 + 175/126 = 418/126 - 418/126 simplified gives 209/63
- So, 81/42 + 25/18 = 209/63
In mixed form: 320/63
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