Add 21/45 and 3/5
21/45 + 3/5 is 16/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 5 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 45 × 1 = 45,
21/45 = 21 × 1/45 × 1 = 21/45 - Likewise, for the 2nd fraction, since 5 × 9 = 45,
3/5 = 3 × 9/5 × 9 = 27/45 - Add the two like fractions:
21/45 + 27/45 = 21 + 27/45 = 48/45 - 48/45 simplified gives 16/15
- So, 21/45 + 3/5 = 16/15
In mixed form: 11/15
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