Add 27/20 and 18/7
1st number: 1 7/20, 2nd number: 2 4/7
27/20 + 18/7 is 549/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
27/20 = 27 × 7/20 × 7 = 189/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
18/7 = 18 × 20/7 × 20 = 360/140 - Add the two like fractions:
189/140 + 360/140 = 189 + 360/140 = 549/140 - So, 27/20 + 18/7 = 549/140
In mixed form: 3129/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/20+18/7 27/20+36/7 27/40+18/7 27/20+18/14 81/20+18/7 27/20+54/7 27/60+18/7 27/20+18/21 27/20+90/7 27/20+18/35 27/20+18/49