Add 21/18 and 98/7
1st number: 1 3/18, 2nd number: 14 0/7
21/18 + 98/7 is 91/6.
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,
21/18 = 21 × 7/18 × 7 = 147/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
98/7 = 98 × 18/7 × 18 = 1764/126 - Add the two like fractions:
147/126 + 1764/126 = 147 + 1764/126 = 1911/126 - 1911/126 simplified gives 91/6
- So, 21/18 + 98/7 = 91/6
In mixed form: 151/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/18+98/7 21/36+98/7 21/18+98/14 63/18+98/7 21/54+98/7 21/18+98/21 21/90+98/7 21/18+98/35 21/18+98/49