Add 4/21 and 72/10
1st number: 4/21, 2nd number: 7 2/10
4/21 + 72/10 is 776/105.
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,
4/21 = 4 × 10/21 × 10 = 40/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
72/10 = 72 × 21/10 × 21 = 1512/210 - Add the two like fractions:
40/210 + 1512/210 = 40 + 1512/210 = 1552/210 - 1552/210 simplified gives 776/105
- So, 4/21 + 72/10 = 776/105
In mixed form: 741/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/21+72/10 4/42+72/10 4/21+72/20 12/21+72/10 4/63+72/10 4/21+72/30 20/21+72/10 4/21+72/50 28/21+72/10 4/21+72/70