Add 21/75 and 3/15
21/75 + 3/15 is 12/25.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 15 is 75
Next, find the equivalent fraction of both fractional numbers with denominator 75 - For the 1st fraction, since 75 × 1 = 75,
21/75 = 21 × 1/75 × 1 = 21/75 - Likewise, for the 2nd fraction, since 15 × 5 = 75,
3/15 = 3 × 5/15 × 5 = 15/75 - Add the two like fractions:
21/75 + 15/75 = 21 + 15/75 = 36/75 - 36/75 simplified gives 12/25
- So, 21/75 + 3/15 = 12/25
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