Add 4/15 and 21/36
4/15 + 21/36 is 17/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 15 × 12 = 180,
4/15 = 4 × 12/15 × 12 = 48/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
21/36 = 21 × 5/36 × 5 = 105/180 - Add the two like fractions:
48/180 + 105/180 = 48 + 105/180 = 153/180 - 153/180 simplified gives 17/20
- So, 4/15 + 21/36 = 17/20
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