Add 21/30 and 80/63
1st number: 21/30, 2nd number: 1 17/63
21/30 + 80/63 is 1241/630.
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,
80/63 = 80 × 10/63 × 10 = 800/630 - Add the two like fractions:
441/630 + 800/630 = 441 + 800/630 = 1241/630 - So, 21/30 + 80/63 = 1241/630
In mixed form: 1611/630
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