Add 9/8 and 21/27
1st number: 1 1/8, 2nd number: 21/27
9/8 + 21/27 is 137/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 27 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 8 × 27 = 216,
9/8 = 9 × 27/8 × 27 = 243/216 - Likewise, for the 2nd fraction, since 27 × 8 = 216,
21/27 = 21 × 8/27 × 8 = 168/216 - Add the two like fractions:
243/216 + 168/216 = 243 + 168/216 = 411/216 - 411/216 simplified gives 137/72
- So, 9/8 + 21/27 = 137/72
In mixed form: 165/72
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