Add 63/90 and 12/9
1st number: 63/90, 2nd number: 1 3/9
63/90 + 12/9 is 61/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
63/90 = 63 × 1/90 × 1 = 63/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
12/9 = 12 × 10/9 × 10 = 120/90 - Add the two like fractions:
63/90 + 120/90 = 63 + 120/90 = 183/90 - 183/90 simplified gives 61/30
- So, 63/90 + 12/9 = 61/30
In mixed form: 21/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/90+24/9 63/90+12/18 63/90+36/9 63/90+12/27 63/90+60/9 63/90+12/45 63/90+84/9 63/90+12/63