Add 8/21 and 18/54
8/21 + 18/54 is 5/7.
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,
8/21 = 8 × 18/21 × 18 = 144/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
18/54 = 18 × 7/54 × 7 = 126/378 - Add the two like fractions:
144/378 + 126/378 = 144 + 126/378 = 270/378 - 270/378 simplified gives 5/7
- So, 8/21 + 18/54 = 5/7
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