Add 42/25 and 21/45
1st number: 1 17/25, 2nd number: 21/45
42/25 + 21/45 is 161/75.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 45 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 25 × 9 = 225,
42/25 = 42 × 9/25 × 9 = 378/225 - Likewise, for the 2nd fraction, since 45 × 5 = 225,
21/45 = 21 × 5/45 × 5 = 105/225 - Add the two like fractions:
378/225 + 105/225 = 378 + 105/225 = 483/225 - 483/225 simplified gives 161/75
- So, 42/25 + 21/45 = 161/75
In mixed form: 211/75
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