Add 70/5 and 21/60
1st number: 14 0/5, 2nd number: 21/60
70/5 + 21/60 is 287/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 60 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 5 × 12 = 60,
70/5 = 70 × 12/5 × 12 = 840/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
21/60 = 21 × 1/60 × 1 = 21/60 - Add the two like fractions:
840/60 + 21/60 = 840 + 21/60 = 861/60 - 861/60 simplified gives 287/20
- So, 70/5 + 21/60 = 287/20
In mixed form: 147/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/5+42/60 70/10+21/60 70/5+63/60 70/15+21/60 70/25+21/60 70/35+21/60