Add 12/90 and 63/20
1st number: 12/90, 2nd number: 3 3/20
12/90 + 63/20 is 197/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
12/90 = 12 × 2/90 × 2 = 24/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
63/20 = 63 × 9/20 × 9 = 567/180 - Add the two like fractions:
24/180 + 567/180 = 24 + 567/180 = 591/180 - 591/180 simplified gives 197/60
- So, 12/90 + 63/20 = 197/60
In mixed form: 317/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/90+63/20 12/90+63/40 36/90+63/20 12/90+63/60 60/90+63/20 84/90+63/20