Add 21/30 and 12/63
21/30 + 12/63 is 187/210.
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,
12/63 = 12 × 10/63 × 10 = 120/630 - Add the two like fractions:
441/630 + 120/630 = 441 + 120/630 = 561/630 - 561/630 simplified gives 187/210
- So, 21/30 + 12/63 = 187/210
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