Add 63/54 and 18/21
1st number: 1 9/54, 2nd number: 18/21
63/54 + 18/21 is 85/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 21 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
63/54 = 63 × 7/54 × 7 = 441/378 - Likewise, for the 2nd fraction, since 21 × 18 = 378,
18/21 = 18 × 18/21 × 18 = 324/378 - Add the two like fractions:
441/378 + 324/378 = 441 + 324/378 = 765/378 - 765/378 simplified gives 85/42
- So, 63/54 + 18/21 = 85/42
In mixed form: 21/42
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