Add 8/5 and 21/45
1st number: 1 3/5, 2nd number: 21/45
8/5 + 21/45 is 31/15.
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,
8/5 = 8 × 9/5 × 9 = 72/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
21/45 = 21 × 1/45 × 1 = 21/45 - Add the two like fractions:
72/45 + 21/45 = 72 + 21/45 = 93/45 - 93/45 simplified gives 31/15
- So, 8/5 + 21/45 = 31/15
In mixed form: 21/15
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