Add 21/63 and 14/20
21/63 + 14/20 is 31/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 20 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 63 × 20 = 1260,
21/63 = 21 × 20/63 × 20 = 420/1260 - Likewise, for the 2nd fraction, since 20 × 63 = 1260,
14/20 = 14 × 63/20 × 63 = 882/1260 - Add the two like fractions:
420/1260 + 882/1260 = 420 + 882/1260 = 1302/1260 - 1302/1260 simplified gives 31/30
- So, 21/63 + 14/20 = 31/30
In mixed form: 11/30
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