Add 27/18 and 30/7
1st number: 1 9/18, 2nd number: 4 2/7
27/18 + 30/7 is 81/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 7 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
27/18 = 27 × 7/18 × 7 = 189/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
30/7 = 30 × 18/7 × 18 = 540/126 - Add the two like fractions:
189/126 + 540/126 = 189 + 540/126 = 729/126 - 729/126 simplified gives 81/14
- So, 27/18 + 30/7 = 81/14
In mixed form: 511/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/18+30/7 27/18+60/7 27/36+30/7 27/18+30/14 81/18+30/7 27/18+90/7 27/54+30/7 27/18+30/21 27/90+30/7 27/18+30/35 27/18+30/49