Add 40/21 and 98/12
1st number: 1 19/21, 2nd number: 8 2/12
40/21 + 98/12 is 141/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
40/21 = 40 × 4/21 × 4 = 160/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
98/12 = 98 × 7/12 × 7 = 686/84 - Add the two like fractions:
160/84 + 686/84 = 160 + 686/84 = 846/84 - 846/84 simplified gives 141/14
- So, 40/21 + 98/12 = 141/14
In mixed form: 101/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/21+98/12 40/42+98/12 40/21+98/24 40/63+98/12 40/21+98/36 40/21+98/60 40/21+98/84