Add 6/21 and 42/54
6/21 + 42/54 is 67/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 21 × 18 = 378,
6/21 = 6 × 18/21 × 18 = 108/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
42/54 = 42 × 7/54 × 7 = 294/378 - Add the two like fractions:
108/378 + 294/378 = 108 + 294/378 = 402/378 - 402/378 simplified gives 67/63
- So, 6/21 + 42/54 = 67/63
In mixed form: 14/63
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