Add 16/20 and 21/63
16/20 + 21/63 is 17/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 63 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 20 × 63 = 1260,
16/20 = 16 × 63/20 × 63 = 1008/1260 - Likewise, for the 2nd fraction, since 63 × 20 = 1260,
21/63 = 21 × 20/63 × 20 = 420/1260 - Add the two like fractions:
1008/1260 + 420/1260 = 1008 + 420/1260 = 1428/1260 - 1428/1260 simplified gives 17/15
- So, 16/20 + 21/63 = 17/15
In mixed form: 12/15
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