Add 7/10 and 50/21
1st number: 7/10, 2nd number: 2 8/21
7/10 + 50/21 is 647/210.
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,
7/10 = 7 × 21/10 × 21 = 147/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
50/21 = 50 × 10/21 × 10 = 500/210 - Add the two like fractions:
147/210 + 500/210 = 147 + 500/210 = 647/210 - So, 7/10 + 50/21 = 647/210
In mixed form: 317/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/10+50/21 7/20+50/21 7/10+50/42 21/10+50/21 7/30+50/21 7/10+50/63 35/10+50/21 7/50+50/21 49/10+50/21 7/70+50/21