Add 20/45 and 42/25
1st number: 20/45, 2nd number: 1 17/25
20/45 + 42/25 is 478/225.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 25 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 45 × 5 = 225,
20/45 = 20 × 5/45 × 5 = 100/225 - Likewise, for the 2nd fraction, since 25 × 9 = 225,
42/25 = 42 × 9/25 × 9 = 378/225 - Add the two like fractions:
100/225 + 378/225 = 100 + 378/225 = 478/225 - So, 20/45 + 42/25 = 478/225
In mixed form: 228/225
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