Add 12/54 and 63/40
1st number: 12/54, 2nd number: 1 23/40
12/54 + 63/40 is 647/360.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 40 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 54 × 20 = 1080,
12/54 = 12 × 20/54 × 20 = 240/1080 - Likewise, for the 2nd fraction, since 40 × 27 = 1080,
63/40 = 63 × 27/40 × 27 = 1701/1080 - Add the two like fractions:
240/1080 + 1701/1080 = 240 + 1701/1080 = 1941/1080 - 1941/1080 simplified gives 647/360
- So, 12/54 + 63/40 = 647/360
In mixed form: 1287/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/54+63/40 12/54+63/80 36/54+63/40 60/54+63/40 84/54+63/40