Add 25/8 and 42/81
1st number: 3 1/8, 2nd number: 42/81
25/8 + 42/81 is 787/216.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 81 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 8 × 81 = 648,
25/8 = 25 × 81/8 × 81 = 2025/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
42/81 = 42 × 8/81 × 8 = 336/648 - Add the two like fractions:
2025/648 + 336/648 = 2025 + 336/648 = 2361/648 - 2361/648 simplified gives 787/216
- So, 25/8 + 42/81 = 787/216
In mixed form: 3139/216
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