Add 2/70 and 25/21
1st number: 2/70, 2nd number: 1 4/21
2/70 + 25/21 is 128/105.
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,
2/70 = 2 × 3/70 × 3 = 6/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
25/21 = 25 × 10/21 × 10 = 250/210 - Add the two like fractions:
6/210 + 250/210 = 6 + 250/210 = 256/210 - 256/210 simplified gives 128/105
- So, 2/70 + 25/21 = 128/105
In mixed form: 123/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/70+25/21 2/70+50/21 2/70+25/42 6/70+25/21 2/70+75/21 2/70+25/63 10/70+25/21 14/70+25/21