Add 70/10 and 21/60
1st number: 7 0/10, 2nd number: 21/60
70/10 + 21/60 is 147/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 60 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 10 × 6 = 60,
70/10 = 70 × 6/10 × 6 = 420/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
21/60 = 21 × 1/60 × 1 = 21/60 - Add the two like fractions:
420/60 + 21/60 = 420 + 21/60 = 441/60 - 441/60 simplified gives 147/20
- So, 70/10 + 21/60 = 147/20
In mixed form: 77/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/10+42/60 70/20+21/60 70/10+63/60 70/30+21/60 70/50+21/60