Add 12/5 and 98/21
1st number: 2 2/5, 2nd number: 4 14/21
12/5 + 98/21 is 106/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 5 × 21 = 105,
12/5 = 12 × 21/5 × 21 = 252/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
98/21 = 98 × 5/21 × 5 = 490/105 - Add the two like fractions:
252/105 + 490/105 = 252 + 490/105 = 742/105 - 742/105 simplified gives 106/15
- So, 12/5 + 98/21 = 106/15
In mixed form: 71/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/5+98/21 12/10+98/21 12/5+98/42 36/5+98/21 12/15+98/21 12/5+98/63 60/5+98/21 12/25+98/21 84/5+98/21 12/35+98/21