Add 12/8 and 21/54
1st number: 1 4/8, 2nd number: 21/54
12/8 + 21/54 is 17/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 54 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 8 × 27 = 216,
12/8 = 12 × 27/8 × 27 = 324/216 - Likewise, for the 2nd fraction, since 54 × 4 = 216,
21/54 = 21 × 4/54 × 4 = 84/216 - Add the two like fractions:
324/216 + 84/216 = 324 + 84/216 = 408/216 - 408/216 simplified gives 17/9
- So, 12/8 + 21/54 = 17/9
In mixed form: 18/9
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