Add 60/70 and 7/21
60/70 + 7/21 is 25/21.
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,
60/70 = 60 × 3/70 × 3 = 180/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
7/21 = 7 × 10/21 × 10 = 70/210 - Add the two like fractions:
180/210 + 70/210 = 180 + 70/210 = 250/210 - 250/210 simplified gives 25/21
- So, 60/70 + 7/21 = 25/21
In mixed form: 14/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/70+14/21 60/70+7/42 60/70+7/63 60/70+35/21 60/70+49/21