Add 20/28 and 21/54
20/28 + 21/54 is 139/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 54 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 28 × 27 = 756,
20/28 = 20 × 27/28 × 27 = 540/756 - Likewise, for the 2nd fraction, since 54 × 14 = 756,
21/54 = 21 × 14/54 × 14 = 294/756 - Add the two like fractions:
540/756 + 294/756 = 540 + 294/756 = 834/756 - 834/756 simplified gives 139/126
- So, 20/28 + 21/54 = 139/126
In mixed form: 113/126
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