Add 21/10 and 15/75
1st number: 2 1/10, 2nd number: 15/75
21/10 + 15/75 is 23/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 75 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 10 × 15 = 150,
21/10 = 21 × 15/10 × 15 = 315/150 - Likewise, for the 2nd fraction, since 75 × 2 = 150,
15/75 = 15 × 2/75 × 2 = 30/150 - Add the two like fractions:
315/150 + 30/150 = 315 + 30/150 = 345/150 - 345/150 simplified gives 23/10
- So, 21/10 + 15/75 = 23/10
In mixed form: 23/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/10+15/75 21/10+30/75 21/20+15/75 63/10+15/75 21/10+45/75 21/30+15/75 21/50+15/75 21/70+15/75