Add 84/21 and 3/30
1st number: 4 0/21, 2nd number: 3/30
84/21 + 3/30 is 41/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
84/21 = 84 × 10/21 × 10 = 840/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
3/30 = 3 × 7/30 × 7 = 21/210 - Add the two like fractions:
840/210 + 21/210 = 840 + 21/210 = 861/210 - 861/210 simplified gives 41/10
- So, 84/21 + 3/30 = 41/10
In mixed form: 41/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/21+6/30 84/42+3/30 84/21+3/60 84/21+9/30 84/63+3/30 84/21+3/90 84/21+15/30 84/21+21/30