Add 3/70 and 25/21
1st number: 3/70, 2nd number: 1 4/21
3/70 + 25/21 is 37/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
3/70 = 3 × 3/70 × 3 = 9/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
25/21 = 25 × 10/21 × 10 = 250/210 - Add the two like fractions:
9/210 + 250/210 = 9 + 250/210 = 259/210 - 259/210 simplified gives 37/30
- So, 3/70 + 25/21 = 37/30
In mixed form: 17/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/70+25/21 3/70+50/21 3/70+25/42 9/70+25/21 3/70+75/21 3/70+25/63 15/70+25/21 21/70+25/21