Add 8/21 and 15/18
8/21 + 15/18 is 17/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 21 × 6 = 126,
8/21 = 8 × 6/21 × 6 = 48/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
15/18 = 15 × 7/18 × 7 = 105/126 - Add the two like fractions:
48/126 + 105/126 = 48 + 105/126 = 153/126 - 153/126 simplified gives 17/14
- So, 8/21 + 15/18 = 17/14
In mixed form: 13/14
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