Add 18/21 and 5/60
18/21 + 5/60 is 79/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
18/21 = 18 × 20/21 × 20 = 360/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
5/60 = 5 × 7/60 × 7 = 35/420 - Add the two like fractions:
360/420 + 35/420 = 360 + 35/420 = 395/420 - 395/420 simplified gives 79/84
- So, 18/21 + 5/60 = 79/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/21+5/60 18/21+10/60 18/42+5/60 54/21+5/60 18/21+15/60 18/63+5/60 90/21+5/60 18/21+25/60 18/21+35/60