Add 70/5 and 21/45
1st number: 14 0/5, 2nd number: 21/45
70/5 + 21/45 is 217/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 5 × 9 = 45,
70/5 = 70 × 9/5 × 9 = 630/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
21/45 = 21 × 1/45 × 1 = 21/45 - Add the two like fractions:
630/45 + 21/45 = 630 + 21/45 = 651/45 - 651/45 simplified gives 217/15
- So, 70/5 + 21/45 = 217/15
In mixed form: 147/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/5+42/45 70/10+21/45 70/5+21/90 70/5+63/45 70/15+21/45 70/25+21/45 70/35+21/45