Add 21/30 and 25/63
21/30 + 25/63 is 691/630.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 30 × 21 = 630,
21/30 = 21 × 21/30 × 21 = 441/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
25/63 = 25 × 10/63 × 10 = 250/630 - Add the two like fractions:
441/630 + 250/630 = 441 + 250/630 = 691/630 - So, 21/30 + 25/63 = 691/630
In mixed form: 161/630
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