Add 21/54 and 6/12
21/54 + 6/12 is 8/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 12 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 54 × 2 = 108,
21/54 = 21 × 2/54 × 2 = 42/108 - Likewise, for the 2nd fraction, since 12 × 9 = 108,
6/12 = 6 × 9/12 × 9 = 54/108 - Add the two like fractions:
42/108 + 54/108 = 42 + 54/108 = 96/108 - 96/108 simplified gives 8/9
- So, 21/54 + 6/12 = 8/9
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