Add 12/10 and 4/21
1st number: 1 2/10, 2nd number: 4/21
12/10 + 4/21 is 146/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
12/10 = 12 × 21/10 × 21 = 252/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
4/21 = 4 × 10/21 × 10 = 40/210 - Add the two like fractions:
252/210 + 40/210 = 252 + 40/210 = 292/210 - 292/210 simplified gives 146/105
- So, 12/10 + 4/21 = 146/105
In mixed form: 141/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/10+4/21 12/10+8/21 12/20+4/21 12/10+4/42 36/10+4/21 12/10+12/21 12/30+4/21 12/10+4/63 60/10+4/21 12/10+20/21 12/50+4/21 84/10+4/21 12/10+28/21 12/70+4/21