Add 21/60 and 50/72
21/60 + 50/72 is 47/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 60 × 6 = 360,
21/60 = 21 × 6/60 × 6 = 126/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
50/72 = 50 × 5/72 × 5 = 250/360 - Add the two like fractions:
126/360 + 250/360 = 126 + 250/360 = 376/360 - 376/360 simplified gives 47/45
- So, 21/60 + 50/72 = 47/45
In mixed form: 12/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/60+50/72 63/60+50/72