Add 63/90 and 15/10
1st number: 63/90, 2nd number: 1 5/10
63/90 + 15/10 is 11/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 10 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 10 × 9 = 90,
15/10 = 15 × 9/10 × 9 = 135/90 - Add the two like fractions:
63/90 + 135/90 = 63 + 135/90 = 198/90 - 198/90 simplified gives 11/5
- So, 63/90 + 15/10 = 11/5
In mixed form: 21/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/90+30/10 63/90+15/20 63/90+45/10 63/90+15/30 63/90+75/10 63/90+15/50 63/90+15/70