Add 40/21 and 98/10
1st number: 1 19/21, 2nd number: 9 8/10
40/21 + 98/10 is 1229/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 10 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
40/21 = 40 × 10/21 × 10 = 400/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
98/10 = 98 × 21/10 × 21 = 2058/210 - Add the two like fractions:
400/210 + 2058/210 = 400 + 2058/210 = 2458/210 - 2458/210 simplified gives 1229/105
- So, 40/21 + 98/10 = 1229/105
In mixed form: 1174/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/21+98/10 40/42+98/10 40/21+98/20 40/63+98/10 40/21+98/30 40/21+98/50 40/21+98/70