Add 21/5 and 75/10
1st number: 4 1/5, 2nd number: 7 5/10
21/5 + 75/10 is 117/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 10 is 10
Next, find the equivalent fraction of both fractional numbers with denominator 10 - For the 1st fraction, since 5 × 2 = 10,
21/5 = 21 × 2/5 × 2 = 42/10 - Likewise, for the 2nd fraction, since 10 × 1 = 10,
75/10 = 75 × 1/10 × 1 = 75/10 - Add the two like fractions:
42/10 + 75/10 = 42 + 75/10 = 117/10 - So, 21/5 + 75/10 = 117/10
In mixed form: 117/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5+75/10 21/10+75/10 21/5+75/20 63/5+75/10 21/15+75/10 21/5+75/30 21/25+75/10 21/5+75/50 21/35+75/10 21/5+75/70