Add 84/21 and 49/10
1st number: 4 0/21, 2nd number: 4 9/10
84/21 + 49/10 is 89/10.
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,
84/21 = 84 × 10/21 × 10 = 840/210 - Likewise, for the 2nd fraction, since 10 × 21 = 210,
49/10 = 49 × 21/10 × 21 = 1029/210 - Add the two like fractions:
840/210 + 1029/210 = 840 + 1029/210 = 1869/210 - 1869/210 simplified gives 89/10
- So, 84/21 + 49/10 = 89/10
In mixed form: 89/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/21+98/10 84/42+49/10 84/21+49/20 84/63+49/10 84/21+49/30 84/21+49/50 84/21+49/70