Add 70/10 and 1/21
1st number: 7 0/10, 2nd number: 1/21
70/10 + 1/21 is 148/21.
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,
70/10 = 70 × 21/10 × 21 = 1470/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
1/21 = 1 × 10/21 × 10 = 10/210 - Add the two like fractions:
1470/210 + 10/210 = 1470 + 10/210 = 1480/210 - 1480/210 simplified gives 148/21
- So, 70/10 + 1/21 = 148/21
In mixed form: 71/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/10+2/21 70/20+1/21 70/10+1/42 70/10+3/21 70/30+1/21 70/10+1/63 70/10+5/21 70/50+1/21 70/10+7/21