Add 7/5 and 21/72
1st number: 1 2/5, 2nd number: 21/72
7/5 + 21/72 is 203/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 5 × 72 = 360,
7/5 = 7 × 72/5 × 72 = 504/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
21/72 = 21 × 5/72 × 5 = 105/360 - Add the two like fractions:
504/360 + 105/360 = 504 + 105/360 = 609/360 - 609/360 simplified gives 203/120
- So, 7/5 + 21/72 = 203/120
In mixed form: 183/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/5+21/72 7/5+42/72 7/10+21/72 21/5+21/72 7/5+63/72 7/15+21/72 35/5+21/72 7/25+21/72 49/5+21/72 7/35+21/72