Add 54/21 and 42/63
1st number: 2 12/21, 2nd number: 42/63
54/21 + 42/63 is 68/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
54/21 = 54 × 3/21 × 3 = 162/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
42/63 = 42 × 1/63 × 1 = 42/63 - Add the two like fractions:
162/63 + 42/63 = 162 + 42/63 = 204/63 - 204/63 simplified gives 68/21
- So, 54/21 + 42/63 = 68/21
In mixed form: 35/21
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