Add 21/54 and 20/35
21/54 + 20/35 is 121/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 35 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 54 × 35 = 1890,
21/54 = 21 × 35/54 × 35 = 735/1890 - Likewise, for the 2nd fraction, since 35 × 54 = 1890,
20/35 = 20 × 54/35 × 54 = 1080/1890 - Add the two like fractions:
735/1890 + 1080/1890 = 735 + 1080/1890 = 1815/1890 - 1815/1890 simplified gives 121/126
- So, 21/54 + 20/35 = 121/126
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