Add 21/30 and 30/63
21/30 + 30/63 is 247/210.
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,
30/63 = 30 × 10/63 × 10 = 300/630 - Add the two like fractions:
441/630 + 300/630 = 441 + 300/630 = 741/630 - 741/630 simplified gives 247/210
- So, 21/30 + 30/63 = 247/210
In mixed form: 137/210
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