Add 12/63 and 27/20
1st number: 12/63, 2nd number: 1 7/20
12/63 + 27/20 is 647/420.
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,
12/63 = 12 × 20/63 × 20 = 240/1260 - Likewise, for the 2nd fraction, since 20 × 63 = 1260,
27/20 = 27 × 63/20 × 63 = 1701/1260 - Add the two like fractions:
240/1260 + 1701/1260 = 240 + 1701/1260 = 1941/1260 - 1941/1260 simplified gives 647/420
- So, 12/63 + 27/20 = 647/420
In mixed form: 1227/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/63+27/20 12/63+54/20 12/63+27/40 36/63+27/20 12/63+81/20 12/63+27/60 60/63+27/20 84/63+27/20