Add 28/10 and 63/45
1st number: 2 8/10, 2nd number: 1 18/45
28/10 + 63/45 is 21/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
28/10 = 28 × 9/10 × 9 = 252/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
63/45 = 63 × 2/45 × 2 = 126/90 - Add the two like fractions:
252/90 + 126/90 = 252 + 126/90 = 378/90 - 378/90 simplified gives 21/5
- So, 28/10 + 63/45 = 21/5
In mixed form: 41/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/10+63/45 28/20+63/45 28/10+63/90 84/10+63/45 28/30+63/45 28/50+63/45 28/70+63/45