Add 63/18 and 12/30
1st number: 3 9/18, 2nd number: 12/30
63/18 + 12/30 is 39/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 30 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 30 × 3 = 90,
12/30 = 12 × 3/30 × 3 = 36/90 - Add the two like fractions:
315/90 + 36/90 = 315 + 36/90 = 351/90 - 351/90 simplified gives 39/10
- So, 63/18 + 12/30 = 39/10
In mixed form: 39/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/18+24/30 63/36+12/30 63/18+12/60 63/18+36/30 63/54+12/30 63/18+12/90 63/18+60/30 63/90+12/30 63/18+84/30