Add 54/20 and 63/7
1st number: 2 14/20, 2nd number: 9 0/7
54/20 + 63/7 is 117/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
54/20 = 54 × 7/20 × 7 = 378/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
63/7 = 63 × 20/7 × 20 = 1260/140 - Add the two like fractions:
378/140 + 1260/140 = 378 + 1260/140 = 1638/140 - 1638/140 simplified gives 117/10
- So, 54/20 + 63/7 = 117/10
In mixed form: 117/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/40+63/7 54/20+63/14 54/60+63/7 54/20+63/21 54/20+63/35 54/20+63/49