Add 81/7 and 14/18
1st number: 11 4/7, 2nd number: 14/18
81/7 + 14/18 is 778/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 7 × 18 = 126,
81/7 = 81 × 18/7 × 18 = 1458/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
14/18 = 14 × 7/18 × 7 = 98/126 - Add the two like fractions:
1458/126 + 98/126 = 1458 + 98/126 = 1556/126 - 1556/126 simplified gives 778/63
- So, 81/7 + 14/18 = 778/63
In mixed form: 1222/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/7+28/18 81/14+14/18 81/7+14/36 81/7+42/18 81/21+14/18 81/7+14/54 81/7+70/18 81/35+14/18 81/7+14/90 81/7+98/18 81/49+14/18