Add 27/63 and 42/21
1st number: 27/63, 2nd number: 2 0/21
27/63 + 42/21 is 17/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 63 × 1 = 63,
27/63 = 27 × 1/63 × 1 = 27/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
42/21 = 42 × 3/21 × 3 = 126/63 - Add the two like fractions:
27/63 + 126/63 = 27 + 126/63 = 153/63 - 153/63 simplified gives 17/7
- So, 27/63 + 42/21 = 17/7
In mixed form: 23/7
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