Add 15/25 and 7/81
15/25 + 7/81 is 278/405.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 81 is 2025
Next, find the equivalent fraction of both fractional numbers with denominator 2025 - For the 1st fraction, since 25 × 81 = 2025,
15/25 = 15 × 81/25 × 81 = 1215/2025 - Likewise, for the 2nd fraction, since 81 × 25 = 2025,
7/81 = 7 × 25/81 × 25 = 175/2025 - Add the two like fractions:
1215/2025 + 175/2025 = 1215 + 175/2025 = 1390/2025 - 1390/2025 simplified gives 278/405
- So, 15/25 + 7/81 = 278/405
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