Add 54/84 and 21/54
54/84 + 21/54 is 65/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 54 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 84 × 9 = 756,
54/84 = 54 × 9/84 × 9 = 486/756 - Likewise, for the 2nd fraction, since 54 × 14 = 756,
21/54 = 21 × 14/54 × 14 = 294/756 - Add the two like fractions:
486/756 + 294/756 = 486 + 294/756 = 780/756 - 780/756 simplified gives 65/63
- So, 54/84 + 21/54 = 65/63
In mixed form: 12/63
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