Add 60/70 and 5/21
60/70 + 5/21 is 23/21.
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,
5/21 = 5 × 10/21 × 10 = 50/210 - Add the two like fractions:
180/210 + 50/210 = 180 + 50/210 = 230/210 - 230/210 simplified gives 23/21
- So, 60/70 + 5/21 = 23/21
In mixed form: 12/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/70+10/21 60/70+5/42 60/70+15/21 60/70+5/63 60/70+25/21 60/70+35/21