Add 75/7 and 27/20
1st number: 10 5/7, 2nd number: 1 7/20
75/7 + 27/20 is 1689/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 7 × 20 = 140,
75/7 = 75 × 20/7 × 20 = 1500/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
27/20 = 27 × 7/20 × 7 = 189/140 - Add the two like fractions:
1500/140 + 189/140 = 1500 + 189/140 = 1689/140 - So, 75/7 + 27/20 = 1689/140
In mixed form: 129/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/7+54/20 75/14+27/20 75/7+27/40 75/7+81/20 75/21+27/20 75/7+27/60 75/35+27/20 75/49+27/20