Add 21/5 and 2/72
1st number: 4 1/5, 2nd number: 2/72
21/5 + 2/72 is 761/180.
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,
21/5 = 21 × 72/5 × 72 = 1512/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
2/72 = 2 × 5/72 × 5 = 10/360 - Add the two like fractions:
1512/360 + 10/360 = 1512 + 10/360 = 1522/360 - 1522/360 simplified gives 761/180
- So, 21/5 + 2/72 = 761/180
In mixed form: 441/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5+2/72 21/5+4/72 21/10+2/72 63/5+2/72 21/5+6/72 21/15+2/72 21/5+10/72 21/25+2/72 21/5+14/72 21/35+2/72