Add 63/18 and 7/45
1st number: 3 9/18, 2nd number: 7/45
63/18 + 7/45 is 329/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
63/18 = 63 × 5/18 × 5 = 315/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
7/45 = 7 × 2/45 × 2 = 14/90 - Add the two like fractions:
315/90 + 14/90 = 315 + 14/90 = 329/90 - So, 63/18 + 7/45 = 329/90
In mixed form: 359/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/18+14/45 63/36+7/45 63/18+7/90 63/18+21/45 63/54+7/45 63/18+35/45 63/90+7/45 63/18+49/45