Add 21/54 and 3/7
21/54 + 3/7 is 103/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 7 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
21/54 = 21 × 7/54 × 7 = 147/378 - Likewise, for the 2nd fraction, since 7 × 54 = 378,
3/7 = 3 × 54/7 × 54 = 162/378 - Add the two like fractions:
147/378 + 162/378 = 147 + 162/378 = 309/378 - 309/378 simplified gives 103/126
- So, 21/54 + 3/7 = 103/126
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