Add 42/5 and 21/45
1st number: 8 2/5, 2nd number: 21/45
42/5 + 21/45 is 133/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 5 × 9 = 45,
42/5 = 42 × 9/5 × 9 = 378/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
21/45 = 21 × 1/45 × 1 = 21/45 - Add the two like fractions:
378/45 + 21/45 = 378 + 21/45 = 399/45 - 399/45 simplified gives 133/15
- So, 42/5 + 21/45 = 133/15
In mixed form: 813/15
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