Add 72/81 and 42/25
1st number: 72/81, 2nd number: 1 17/25
72/81 + 42/25 is 578/225.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 25 is 2025
Next, find the equivalent fraction of both fractional numbers with denominator 2025 - For the 1st fraction, since 81 × 25 = 2025,
72/81 = 72 × 25/81 × 25 = 1800/2025 - Likewise, for the 2nd fraction, since 25 × 81 = 2025,
42/25 = 42 × 81/25 × 81 = 3402/2025 - Add the two like fractions:
1800/2025 + 3402/2025 = 1800 + 3402/2025 = 5202/2025 - 5202/2025 simplified gives 578/225
- So, 72/81 + 42/25 = 578/225
In mixed form: 2128/225
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