Add 2/72 and 21/45
2/72 + 21/45 is 89/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
2/72 = 2 × 5/72 × 5 = 10/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
21/45 = 21 × 8/45 × 8 = 168/360 - Add the two like fractions:
10/360 + 168/360 = 10 + 168/360 = 178/360 - 178/360 simplified gives 89/180
- So, 2/72 + 21/45 = 89/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/72+21/45 2/72+42/45 2/72+21/90 6/72+21/45 2/72+63/45 10/72+21/45 14/72+21/45